However, if the screed. Idelly you need a additive called sbr. The under surface is finished with a polyethylene foil of 12 micron thickness. An easy-to-use floor levelling compound – just add water in correct quantity as directed, mixing with a suitable Mixing Paddle and Drill for a minimum of 2 minutes Absorbent surfaces – Concrete and sand/cement screeds must be primed with Setcrete™ Acrylic Primer diluted in the ratio of 1 part primer to 7 parts waterBituminous Membrane. From the mid 1960s to the mid 1990s a typical concrete floor comprised a layer of hardcore, a polythene damp proof membrane laid on a thin bed of sand (to prevent puncturing), and a floor screed. ScreedMax Grano is often used for external screeding projects under paving, around pools and areas of high traffic. Bitumen, a substance that was commonly used as an adhesive in the 20th century, was initially regarded as the perfect solution for those who wanted to glue down a floor to an underlay quickly and efficiently – but these days, floor installers are recommending you steer clear from using this smelly, viscous material, as it can create all kinds. Screeds are typically bonded onto most concrete. It has an interesting chemistry, with different forms used for different purposes, but in the paving trade, it's most common use is to 'beef up' mortars and concretes. 2 Option 2:. Lawrencez, Jan 7, 2021 #1 Wayners Screwfix Select Mine was thin bitumim and been down 30+ years under those asbestos tiles. link with wall DPCs to form an impervious barrier to prevent moisture reaching the interior of the dwelling. West London customer service: 0330 678 1620. 28 Jun 2008. 5sqm has blown. June 28, 2022. In most rooms, the tiles are still in place, in varying conditions. This has left a black bitumenous residue on the concrete screed and I'm concerned about tiling onto it. 3. The cost of a traditional screed is between £11 and £14 per square meter, based on a thickness of 75mm and a daily coverage of 125 square meters. All screeds and smoothing compounds all have have different slump ratios. My house was built 1950. Concrete floor with bitumen paint – more bitumen or seal . The mixture is heated to 230°C for pouring and spreading or for spreading mastic asphalt screed. 15mm mains water - laid hessian felt sleeve on top of pipe (not around) 28mm gas - wrapped gaffer tape around the pipe. Patch repair mortars. protection, inspection and testing, maintenance and repair for in situ mastic asphalt for flooring applied as a wearing surface or underlay, incorporating waterproof membranes. To protect & seal floor, stone and tile surfaces with minimal visual appearance; Penetrates & cures within the pores of the surface providing a seal for extended service life; Go to product. com A) ARDITEX NA ® can be used with confidence over almost all subfloors without priming including ceramic tiles, bitumen and flooring grade plywood. It can be installed to create drainage falls, level out uneven substrates, and provide a stable base for the specified roof /deck waterproofing system. – the UK’s leading manufacturer of flooring adhesives and floor preparation products for the contract flooring industry. +65 98922908 or 88695136 -Whats App or SMS admin@diatomreno. Moisture damage to the floor had to be dealt to ensure a successful installation. 3 Terms and definitions 1. We operate a 200 vehicle strong company fleet of fully CLOCS and FORS Gold compliant non-tipping Walking Floor artics and 8 wheel tippers. The tiles are fixed with a bitumen adhesive (see photos). #2. g where the free standing cooker was) are all indicative that there wasn't parquet on the floors and that it isn't a DPM. For example, when laying 35mm thick flags, the screed level will be established at 27-30mm below finished paving level, leaving the paving 5-8mm high which is then tapped down to the correct level. Flowing (Cementitious) Cementitious flowing floor screed, such as Cemfloor, is delivered in truck mixers and placed in-situ by pumping. Standard or Ultimate Tarmac asphalts. Easy-Melt is a high grade bonding bitumen, supplied in easy to handle 10kg shrink wrapped blocks. Concrete Repair. Ball and Co. Apply standard water-based (concrete application) slc to all of floor. It provides a good, smooth, hard-wearing floor surface, making it popular in construction. Like all screeds, it is not intended to be the finished, wearing surface. Fortunately, there are a few easy ways to repair bitumen floor screed, ensuring it looks. It may be applied onto either a solid in-situ concrete ground floor slab or onto a precast concrete floor unit. If the designer considers that. This type of screed consists of the ingredients bitumen, sand, chippings and stone dust. Get a contractor in to do it correctly for you. A floor screed is usually a cementitious material made from a 1:3 or 1:4. I am having these removed after being convinced by others to screed over - luckily only one bedroom and hallway was completed. 2. The floor screed was very poor - like the bl**dy Himalayas! The room was originally 2 rooms (before we bought the house). Find your nearest reseller. Further preparation of the. The weep screed shall. We have a specialist asphalt flooring team who can help you with all aspects of asphalt flooring. I wouldn't use water based screed or pva. Re: Asphalt floor. 5 mm) (No. The pattern on that bitumen together with the age of the house (mid-1960s), use in the kitchen and missed areas (e. After this screed should be laid to protect the membrane. Fast drying screed cost. 105 mm. The only problem being sbr additive is expensive . AS 3740-2010 Waterproofing of Domestic Wet Areas and AS 4654. sales@ardexaustralia. As it's technically tarmac i wouldn't see the need to. Ground Floor - Most floors were concrete, often comprising a layer of hardcore (often industrial waste), a 100mm concrete slab and a granolithic screed covered with thermoplastic tiles bedded in bitumen (often with no separate DPM). The new wall had screws put into the old foundation of the original wall. Excellent adhesion and covering power. £75 per m2. Whilst still being fast enough to receive tiles from 24 hours, and resilient flooring from only 7 days. Floating Screed (Minimum thickness 75mm / 65mm for light loading) A levelling screed that is laid on a compressible layer such as thermal or sound insulating material should be at least 65mm thick or, if containing heating pipes a minimum of 75mm thick. #1 Hi, for my living room floor theres about a 4-6 inch concrete base and on top of that theres about 20mm with some kind of screed, bitumen or asphalt hard. Commissioning the underfloor heating before tiling commenced. I wouldn’t recommend screw & plugging ply it will cause the bitumen to crack and then fail the ply. Fixit Pidipoxy EP Dr. If the floor is just soil underneath the screed then take the level down enough to allow for. Suitable for use over plywood substrates and MAPEI surface applied DPMs in most cases without priming. Pot Life. It is essential that this. Floor Screeding, traditional sand & cement, flowing screed, fast drying screed, membranes,. How To Remove Bitumen Stains from Pavers and Kerb Edgers . The pattern on that bitumen together with the age of the house (mid-1960s), use in the kitchen and missed areas (e. The unit weight of a material is. However, it makes a difference whether you apply the screed directly to the bitumen membrane or whether other layers follow in between. This document is useful for engineers, architects and contractors involved in building and civil. I used a wrecking bar to lift it. 4m 2 at a depth of 5 mm. Out of the 7sqm of floor i guess about 1. Remove parquet and some bitumen, seal the floor and remaining bitumen, then use a self levelling compound to level the floor. I have just unearthed some papers which indicate that the extension area has 50mm of screed on top of a 100mm slab of concrete. 2. I have attached a photo after removal. . Subfloor should be level to + - 3mm over a 5 Meters. In addition, this product is winning “mat-smoothness” awards because we. Mechanically remove the bitumen, (there can be trace amounts only) prime the surface with an epoxy DPM, or 2 coats of epoxy if it is replacing the DPM. Customer Service Email: phil-customer. 1. Flexible system to cope with natural movements in the asphalt. To help determine the. ph@bostik. Cleaning up Concrete floor covered in Bitumen – Tile. ceramics I don’t know. a. The floor is a concrete sub base with a 20-25mm bitumen screed on top of that. Layer Thickness. Ground Floor - Most floors were concrete, often comprising a layer of hardcore (often industrial waste), a 100mm concrete slab and a granolithic screed covered with thermoplastic tiles bedded in bitumen (often with no separate DPM). All values are approximate and are subject to variation. We are proud to have over 20 years experience of. For levelling or smoothing differences in thickness of 1-10 mm to receive all types of floor coverings. It's a complete lack of knowledge on your floorlayers part or possibly just a carpet fitter. Paint or roller this over your bitumen then screed away (follow mix/drying instructions on sbr tub) Screeds & Mortars for tiling works. Causes of floor coating blisters. Andrew Golle clears up the confusion surrounding screeds and explains the difference between waterproofing above or below. Engineering News Online provides real time news reportage through originated written,video and audio material. Standard or Ultimate Tarmac asphalts. 20 kg will cover approximately 2. The cost of flow screed is between £10 and £16 per square meter, based on a 50mm thickness and a daily coverage of up to 1,500 square meters. (5m² per 5 litre container) Colour: Blue when wet, Black when dry. The aim of the research was focused on the functionality of three types of waterproofing screeds from the perspective of their use in building structures. Fixit Novolac TC Dr. 22 Aug 2010. In the concrete floor was some wooden batons . Remove parquet and. Theses products can be applied as an asphalt Resurfacer or screeding the surface. When it is expressed in the basic SI Unit of mass (kg/m 3), it is usually referred to as density, but when expressed in terms of. Bitumen can be problematic for tiling over and cause unnecessary damage and stress – the last things you want to endure during a renovation project. Proofex Engage, the original mechanically bonded, pre-applied, below-ground. Then use the correct screed. As it's technically tarmac i wouldn't see the need to. In this case the screed or topping is separated from the floor by insulation boards or an impervious membrane. 019-inch (0. It works well in areas that need levelling and if there is a problem with insulation or damp and is a great. 5/5. I believe as long as it's floor grade asphalt/bitumen you can tile straight to it. Purchase your next favourite publicationARDEX manufacture a range of award-winning latex-based and water-based self levelling & smoothing compounds for internal and external use. Fixit PU Foam InjectionHow to make a screwdriver in the escapists xbox one - Floor screeds even on a concrete slab are laid each time a developer has finished the. The bitumen may also, but I didn't have that tested, although I think it. Each week,an average of 240 899-page impressions are generated by over 64 719 online. As for wether or not it needs to be primed, i'm not sure to be totally honest. alterego. Liquid Screeding. "A typical suspended floor installation could cost you between £1,600 and £2,900 depending on the circumstances," say Energy Saving Trust. Use a roller, paint pad or brush to apply. 2 Option 2:. 20. Option 2: Machine Grinding Removal. Screeds or concrete surfaces to receive wood finishes:Mastic asphalt is ideal for use as a flooring solution, creating a smooth but tough and durable surface. 6 Tiling over bitumen adhesive, some helpful tips: 7 Tiling over old adhesive, is this possible,. Lee Toop. 5Ltr at Screwfix. 5 Ebor Court, Randall Park Way, Retford, DN22 7WF East. Anhydrite screed usually costs in the range of £15 – £20 per sqm,. INSULATING SCREEDS Several proprietary screeds are available and may be one of the following: a) Lightweight aggregate formed from expanded clay or sintered pulverised fuel ash,bonded with a cement binderbitumen floor floor tiling residue screed tile tiling; Discuss bitumen residue on floor screed in the Floor Tiles area at TilersForums. This is particularly important when the levelling out an uneven substrate. I would prefer not to have to screed the whole floor. The inset timber battens are ther to provide a fix for the floor boards (your floor pre-dates modern glued floating floors). Fixit Super Latex Pagel ZL10 Pagel U40 Dr. Aerated concrete slab (500 kg/m 3) 0. A few floors were finished with wooden blocks laid in bitumen. 95. The remaining screed is pitted and covered in old bitumen in places. Contact us. 1. £12 - £16 per m2. If the moisture is only. 27 Sep 2021. High strength surface bonding for wood, paper, veneers, stone, fabrics, plaster, concrete, renders and cement screed, plasterboard, wall coverings, bitumen, polystyrene tiles, painted surfaces, walls,. 3, Prime the slc layer with suitable product for slc. then a liquid membrane goes over this called ardex dpm 1c. Remove bitumen apply an epoxy damp proof membrane to concrete & then use a smoothing compound on top of that for best results. A screed floor is a type of construction flooring that has an even thickness and surface. Day 1: uplift old vinyl, clean floor, Arden NA floor, you can’t walk on it for a few hours. 7. 10mm thick and used as a floor levelling screed. Fixit Pidipoxy EC Dr. I believe that what is on that floor is probably Marley (or similar) vinyl or linoleum tile. You need a flooring professional to use an epoxy liquid DPM and screed suitable for this area and is not a job you should think to attempt 1 pinhole is a failed floor. The surface of the screed should be finished according to the type of wearing surface or flooring that is to be laid. Large area repair mortars. ® Construction Chemicals’ range of specialised floor coatings are screeds based on bitumen, dry shake cementitious materials, self levelling cementitious screeds, epoxies and polyurethanes. 4 and Table 1. Not all primers cure the bitumen i would recomend a 131 primer before u laytex. In addition, this product is winning “mat-smoothness” awards because we. Floor finishes should be applied with the correct adhesives, for example: bitumen rubber emulsion (in accordance with BS 8201) proprietary adhesives (assessed in accordance with Technical Requirement R3) in accordance with manufacturers' instructions. 85kg Latex Coverage: 5m2 at approximately 3mm thick. i try to keep up on new products and a company called ardex uk make a latex based levelling compound called (arditex na)that goes straight over bitumen to seal it. Coverage: Approx 6 m at 3 mm thickness. The floor in the living room is a bitumen floor, and it was in a very sorry state. CODES / SPECIFICATION. Is there a primer I. Building products Quality assured building products for. It's more commonly (when used indoors) used as screed. You can then lay your new floor on top. It is a combination of bitumen, sand and cement which is poured over the top of existing concrete floors to create a durable and attractive finish. For FREE estimates and technical advice get in touch with us today using our contact form or call us on 0207 781 8150. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. At CONEXPO 2023, VÖGELE will be presenting a cross-section of its products, from the small paver, the SUPER 700i, the SUPER 1300-3i compact paver and the SUPER 1703-3i 8 ft paver through to the. All the best JJ. Guaranteed Asphalt Limited 2 Mercury Way, London, SE14 5RR, 020 7277 8773 [email protected] cementitious renders prior to smoothing with gypsum-based products. Fort Lauderdale. Click the “Calculate Materials” button to get the estimated amount of cement and sand needed for your project, displayed in kilograms. After extensive data collecting, we’ve found that the savings over the life of a chromium carbide screed is between $12,000 and $13,000, depending on the make of screed. Apply sbr/cement slurry to remaining bitumen. See moreIm surprised the floors lasted that long 300 will fail over bitumen everytime. Removal of the tiles is non-licensed work, ie. Mixed screed accepts light foot. can be installed in one coat at the required thickness using heat. I'm here to talk about Asphalt… A floor screed is usually a cementitious material made from a 1:3 or 1:4. Heidelberg Materials EasyFlow screed is a high-quality cement-based free-flowing material suitable for all internal domestic and commercial floors. On absorbent surfaces,. However, if the screed topping is soft, this method could destroy the entire topping. Is there any way we can screed over the bitumen?Or is there a damp proof product that can go over the. #2. Iam a floor layer with 25 five years experience. Our screed plates have proven themselves to last at least four times longer than the OEM screeds. Wet screeding should be programmed to allow sufficient drying out time before dry lining is to commence. Lay a water resistant/proof underlay to seperate the slc and an engineered wood floor to form a floating floor. 3 Using self-leveling screed on bitumen; 4 Waterproofing and tiling, some helpful tips: 4. John Malone - Screed technical sales officer: 0797 760 5040. Aluminium. On absorbent surfaces, such as cement and sand screeds, it may be necessary to damp down the surface with water before applying ARDITEX NA ®, to help reduce suction and pinholes. The screed acts as an insulation between the tile adhesive and tacky bitumen. I agree with your damp guy's assessment - take the timber up, strip the bitumen (horrible job), take the timber battens out and fill the holes, then put in a 2- or 3-coat epoxy resin DPM which will seal the surface properly. The old adhesive should of been removed. As it might sound, a bonded screed is applied directly to the. Mastic asphalt screed has many advantages when compared to traditional screeds. 5 Ltr. sloping concrete screed (utilizing 12 - 20 mm baby chips) admixed with ZUPA Santulan Integral Waterproofing Compound @ 100 ml / bag of cement, ZUPAERA Carpet & Flooring International LLC. Ortigas Jr. Here at Flow Screed Servicing we. #1 Hi, I'm doing a kitchen modernisation in my ex-Council house which was built in 1947. sloping concrete screed (utilizing 12 - 20 mm baby chips) admixed with ZUPA Santulan Integral Waterproofing Compound @ 100 ml / bag of cement, ZUPAF. A minimum 0. (29) £3. Only one coat though. Country of Manufacture: United Kingdom. Technical Data. Also, all pre-application preparation should be completed in accordance with the roof coating manufacturer’s requirements. Screeds above underfloor heating should not exceed 40m 2 with a maximum length of 8m. 3. Price Addition Info. ARDEX R 70 P. Floating engineered wood is ok. 3. Moreover, the screed and LVT will prevent moisture evaporation, further exacerbating the problem. For mastic asphalt, wood block and strip, and some textile floor coverings, a non-slip finish is appropriate, while thin sheet and tile floor coverings usually require a smoother, steel trowelled surface. Product Details. A commitment available to all designers, contractors, users and clients thanks to innovative products and solutions with the lowest impact on the environment. "Solid floor insulation could cost considerably more. Day 3: apply Ardit NA screed - room will be out of use for a few hours. 1 Weep screeds. Is there a primer I can use and which would be the best self levelling compound to use. They are available in rear-extender and front-extender models. humidity, temperature of substrate +15 °C. This has left a black bitumenous residue on the concrete screed and I'm concerned about tiling. I'd like to take some time…Provided to YouTube by RCA/LegacyThese Eyes · The Guess WhoWheatfield Soul℗ Originally released 1968. Part 6. 1. It pours wet and then dries to create a solid flat surface that is highly durable. It may be applied onto either a solid in-situ concrete ground floor slab or onto a precast concrete floor unit. 20 kg of Sikafloor-440 Level Fibre Reinforced mixed with 4. Dries in 24 Hours. Bitumen, also known as asphalt, is a sticky, black and highly viscous liquid or semi-solid form of petroleum. THICKNESS. Awards and Accreditations. Adding 1/2" to 1" height to slab cheaply, then finishing with 1/4" self-leveler. There may be a minimum call out charge so you should check by speaking to a member of the team. Will be difficult to use bitumen paint specially under the plaster, I think your best bet is to use hot bitumen pour which will fill in all the nooks and crannies. ScreedMax Grano is often used for external screeding projects under paving, around pools and areas of high traffic. To protect & seal floor, stone and tile surfaces with minimal visual appearance; Penetrates & cures within the pores of the surface providing a seal for extended service life; Go to product. In our trade, it's most commonly used in its form as a thickish, gloopy white liquid, which echoes its roots as a. Repeat steps 2 and 3 till floor is built to recommended level. If the floor is dry and free from dust etc then Ardex NA or similar is the perfect solution, though it can be relatively expensive. The use of a spiked roller can further improve the product performance. Screeds or concrete surfaces to receive wood finishes:Ultraplan Renovation Screed 3240 is suitable where good resistance to loads is required, also for castor wheel traffic and underfloor and undertile heating systems. Floor and Roof Screeds Vermiculite concrete screeds are light, insulating and intrinsically fire resistant. Blocks Aircrete, dense, aggregate, trench and concrete blocks for building. SOPREMA’s bitumen roofing systems are BBA certified, impact and tear-resistant, and they are guaranteed to provide. They’ve been laid on bitumen. Fixit Pidicrete WP 19 – 24 Dr. Larger the hole the more liquid will evaporate and cause more slump. What are the Different Types of Floor Screeds. They are available in rear-extender and front-extender models. In the end I used an old 2" chisel. Fixit Pidipoxy EC Dr. Prime the concrete part of the floor. Vogele. I have approximately 50m2 of floor (3. Wet screeding should be programmed to allow sufficient drying out time before dry lining is to commence. Waterproof and seamless. EasyFlow screed is self-compacting and pump-applied, making it quick and easy to place. 0 Introduction The U-value tables in this Part give a “ready reckoner” approach to establishing the U-values of construction elements. The tiles have been removed in some rooms, leaving the bitumen, probably <1mm thick, and not sticky. Option 2: Machine Grinding Removal. Take off some of the bitumen with a grinder to reduce amount of slc required. It is not a wearing screed – must receive tiles or other floor covering after application of a suitable topping screed Weberfloor Base Rapid Weberfloor Base is a rapid-drying, self-smoothing renovation screed which can be used for levelling concrete, wooden boards, anhydrite screed, sand/cement screed, insulation board, tiles and bitumen. Values given with 20 °C and 65 % rel. There are many proprietary screeds on the market and information about these can be obtained from the manufacturer. IS 2571 Laying of in-situ cement concrete flooring. With the slogan “Quality on all levels“, our product range has a wide coverage with over 2,000 qualitative high quality construction products worldwide for the most diverse of applications. Floor, pavement, joint repair mortars. SCREEDS SAND AND CEMENT Some types of sub-structure require a sand and cement screed to receive the asphalt. Hardcores varied in quality - many have since proved to be totally unsuitable. Two parts, Solvent-free; Good flexibility, withstand micro cracks in concrete; Go to product. Whether you need some new asphalt flooring installed or repairs to an existing asphalt floor Heritage Asphalt can help. SCHOMBURG, the construction chemicals manufacturer from Detmold, develops, produces and markets system construction materials for the national and international market. BS 8218:1998, Code of practice for mastic asphalt roofing. Answered 22nd Aug 2016. A development in the UK is the delivery, mixing, and pumping of screed from a single vehicle. Specialist blast, ballistic blocks and fast beam and block materials. (Picks are used on large ride on models). Due to its properties during installation, mastic asphalt is already prepared so that compression by heavy rollers is not required. After removing the tiles is it possible to seal the floor with something that will stop this colour bleeding through, so that I can relay a vinyl floor. Once the condition of the bitumen residue is assessed, we would recommend the following products and processes. Same as self leveller over flooring ply, 1 coat SBR 1-4, pour away, happy days. 2 July 2013 at 8:01AM. As for wether or not it needs to be primed, i'm not sure to be totally honest. Thermal conductivity (W/mK) Acoustic plasterboard. Cement screed is the most commonly installed type of screed and averages around £12 per sqm. There were loads of embedded circles from creeping under the weight of various furniture. Im surprised the floors lasted that long 300 will fail over bitumen everytime. 1 Weep screeds. Answered 12th Jun 2022. bitumen floor floor tiling residue screed tile tiling; Discuss bitumen residue on floor screed in the Floor Tiles area at TilersForums. Bonded or Un-bonded. 0800 242 5589 - info@speed-screed. We provide a solution for all types of flat roof constructions, whether your project is a new build or refurbishment. #3. Nevertheless this. Mastic asphalt screed is also called AS and, contrary to the above example, has nothing to do with water. £14 per m2. The screed mixture is then poured onto the surface and levels itself out, which makes the installation very easy. Screeding paint price in nigeria - Floor screeds even on a concrete slab are laid each time a developer has finished the slab concrete. Fixit PU Plain Injection Dr. Asphalt (1700 kg/m 3) 0. a. BREEDONFlow® Swiftscreed is suitable for floating, bonded and un-bonded flooring systems, including most underfloor heating systems and all. Screed floors are used on the ground level and as a sub-floor for other building materials such as carpeting, tiles, or linoleum. From the mid 1960s to the mid 1990s a typical concrete floor comprised a layer of hardcore, a polythene damp proof membrane laid on a thin bed of sand (to prevent puncturing), and a floor screed. BREEDONFlow® Swiftscreed is a low shrink, free-flowing cementitious screed, designed to provide a smooth level surface prior to the application of the desired floor finish. This will make the screed strong and will adhere over the Bitumen . The council workman laid a latex based screed over the floor. The hotel believed this idyllic location on the edge of Dartmoor would make the perfect destination spa and aimed to create luxurious fitness and wellbeing facilities. Created by VideoShow:cold, single layer and inverted roof bituminous waterproofing systems are available from SOPREMA as well. If u dont use the right primer the floor screed will blow under nieth eney flooring. It was laid towards the completion of the building prior to hanging the doors and fixing the skirtings. If the floor is now dry and physically sound then yes, you should be fine with a breathable underlay and hessian backed carpet. Warm, cold, single layer and inverted roof bituminous waterproofing systems are available from SOPREMA as well. Screwfix Select. Fixit Pidipoxy EP Dr. weberfloor flex is a self-smoothing floor levelling compound — often incorrectly referred to as a self levelling screed or self levelling floor compound — which can be tiled onto and is an easy screed for applying onto floor substrates subject to some movement, such as wood or underfloor heating. Typical applications are the protection of concrete floors and screeds against wear from traffic abrasion, as well as a. Click the “Calculate Materials” button to get the estimated amount of cement and sand needed for your project, displayed in kilograms. Firstly, apply WAKOL MS330 Primer DPM in one layer. I believe as long as it's floor grade asphalt/bitumen you can tile straight to it.