Polyurethane membrane (1K)
Single-component, moisture-curing elastic membrane, applied straight from the pail. Easy to use.
- Typical use
- Terraces, roofs, balconies
- Coats
- 2 coats, crosswise
- Key feature
- UV resistant
Polyurethane waterproofing for roofs, terraces and balconies
One and two-component, elastic, UV-resistant polyurethane waterproofing. It forms a seamless, watertight membrane and can be applied to concrete, screed and tiles.
- Transparent option – no tile removal
- UV and weather resistant
- Coverage calculation per m²
Which system suits you?
Choose the application area and we will send the right product and quantity on WhatsApp.
Phone: +90 212 614 30 28
What is polyurethane waterproofing?
Watertight, flexible, seamless protection
Polyurethane waterproofing is applied as a liquid by roller or brush and cures into a rubber-like, elastic membrane. With no joints or seams, there are no weak points for water to get through.
Its high elasticity accommodates minor structural movement and thermal expansion. UV-resistant grades protect sun-exposed terraces and roofs for many years.
Our range also includes transparent polyurethane for waterproofing over existing tiles without removal, and elastomeric acrylic and hybrid-polymer coatings for economical roof solutions.
Terraces & balconies
Flat & pitched roofs
Bathrooms & wet areas
Transparent over tiles
Car park decks
Concrete & screed
Systems
Polyurethane & waterproofing systems
The system is chosen according to the substrate, whether it will be covered, and the expected traffic.
Polyurethane membrane (2K)
Two-component system with faster curing and higher mechanical strength – for trafficked and heavily used areas.
- Typical use
- Terraces, car parks, walkways
- Coats
- 2 - 3 coats
- Key feature
- High strength
Transparent polyurethane
Clear protection applied over tiles, ceramics, glass mosaic and natural stone without removal, keeping the original look.
- Typical use
- Tiled terraces & balconies
- Coats
- 2 coats
- Key feature
- No tile removal
Elastomeric acrylic / hybrid polymer
Water-based, flexible and economical roof and terrace coatings, also suitable over shingles and membranes.
- Typical use
- Roofs, terraces, shingles
- Coats
- 2 - 3 coats
- Key feature
- Water-based
Material calculator
How much material do you need?
Enter your area and choose a system to see the approximate material needed. Send us the result on WhatsApp for an exact list.
Estimated total material
0 kg
Values are approximate, based on average consumption. They vary with substrate absorbency, roughness and product type; please confirm with our technical team before ordering.
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Application steps
How is polyurethane waterproofing applied?
Surface preparation
The surface must be dry, sound and clean. Dust, oil, moss and loose material are removed; for over-tile work the grout joints are checked.
Repairs & primer
Cracks and corners are filled and reinforced with fabric where needed. A suitable primer is applied to improve adhesion.
1st and 2nd coat
The first coat is applied by roller or brush; once dry, the second coat is applied crosswise for an even thickness.
Curing
Protect from rain and foot traffic for typically 24-48 hours, and allow full cure before heavy use.
Do not apply when rain is expected or in very cold weather. Recoat and curing times depend on the product and conditions; always follow the label and technical data sheet.
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Polyurethane & waterproofing products
Related guides
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FAQ
Waterproofing FAQ
Can a terrace be waterproofed without removing the tiles?
Yes. Transparent polyurethane products are applied over existing tiles, ceramics or natural stone without removal and form a watertight layer without changing the look. Joints must be sound and the surface clean beforehand.
How long does polyurethane waterproofing last?
With good surface preparation and sufficient thickness, polyurethane membranes protect for many years. Service life depends on sun exposure, traffic and workmanship; choose a UV-resistant grade outdoors.
What is the difference between 1K and 2K polyurethane?
1K (single-component) products are used straight from the pail and cure with air humidity – easy to apply. 2K (two-component) products are mixed with a hardener, cure faster and offer higher mechanical strength.
How much material do I need for a terrace?
A polyurethane membrane typically uses 1.2-1.5 kg/m² in two coats, plus primer. For example, a 40 m² terrace needs roughly 56 kg of membrane. Use the calculator on this page for your own area.
Can tiles be laid over polyurethane waterproofing?
Yes. Where the membrane will be covered, quartz sand is broadcast into the last coat while still wet to create a key for the tile adhesive. Please ask us which adhesive to use before starting.
Can waterproofing be applied in rainy weather?
No. The surface must be dry and no rain should be expected for the first hours after application. Avoid very cold and frosty weather as well.
Is your terrace or roof leaking?
Send a photo and the size of the area; we will reply with product, quantity and price the same day.