PolySeal Waterproofing Kit on a South African flat concrete roof — cured grey waterproof membrane on one side, bare cracked concrete on the other

PolySeal Waterproofing Kit — 4 m²

R 851.00
R 851.00
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PolySeal Waterproofing Kit on a South African flat concrete roof — cured grey waterproof membrane on one side, bare cracked concrete on the other
  • PolySeal Waterproofing Kit on a South African flat concrete roof — cured grey waterproof membrane on one side, bare cracked concrete on the other
  • PolySeal Waterproofing Kit bucket
  • PolySeal Waterproofing Kit packaging
  • PolySeal Waterproofing Kit — 4 m² kit
  • PolySeal Waterproofing Kit on a South African flat concrete roof — cured grey waterproof membrane on one side, bare cracked concrete on the other
  • PolySeal Waterproofing Kit bucket
  • PolySeal Waterproofing Kit packaging
  • PolySeal Waterproofing Kit — 4 m² kit
PolySeal Waterproofing Kit — 4 m²

PolySeal Waterproofing Kit — 4 m²

R 851.00
R 851.00

Pickup available at Shop location

Usually ready in 24 hours

PolySeal Waterproofing Kit — 4 m²

Shop location

Pickup available, usually ready in 24 hours

3/4 Coppel Road
Alrode South
Alberton
Gauteng
1451
South Africa

+27118681181

A complete, flexible waterproofing kit that moves with your surface — and keeps sealing even if it cracks.

Covers about 4 m² per kit — enough for one leak, one damp patch or a garden pond. Larger areas need more than one kit.

Nationwide courier, typically 3–5 working days to main centres. Free collection from Alberton.
What it is

PolySeal is a polymer-elastomer waterproofing system you mix and apply yourself. Everything you need comes in the kit — the PolySeal binder, cement, geofabric reinforcement and a ClearCoat finish — so there's nothing extra to buy.

Once applied, PolySeal sets but stays permanently flexible. It never goes hard or brittle, so it moves with the surface and keeps sealing even when the surface underneath develops shrinkage cracks. It's the same product Polyroads uses on industrial dam liners, canals and reservoirs — now packaged for trade and home projects.

Use it to waterproof and seal:

  • Concrete and metal (zinc) roofs
  • Dam liners, canals and reservoirs
  • Koi ponds and water features
  • Pool repairs and water tanks
  • Walls — including sealing against acids and alkalis

It's supplied as a mix-on-site kit — PolySeal can't be sold pre-mixed because it would cure in the bucket, so you always apply a fresh, full-strength mix.
How to use it
  1. Clean and prepare the surface (sweep and hose; for new or zinc roofs, wash with diluted vinegar or Spirits of Salt).
  2. Prime cracks, joins and roof nails and bond in the geofabric.
  3. Mix PolySeal with the cement and sieve out any lumps.
  4. Brush or roll on the first coat, wait about 1 hour, then apply the second coat.
  5. Finish with the ClearCoat seal.

Drying: re-coat after about 1 hour. For ponds and dam linings, allow 3 days of full-sun curing before filling with water. Dries grey — colourants can be added to tint it.
Specifications
  • In the kit: PolySeal binder · cement · geofabric · ClearCoat finish
  • Coverage: approximately 4 m² per kit
  • Re-coat time: about 1 hour
  • Curing (ponds & dams): 3 days full sun before filling
  • Colour: dries grey, tintable with colourants
  • Kit weight: 18.5 kg
  • Why it lasts: stays flexible for life, bonds tightly to concrete and metal, geofabric bridges cracks and joins

Contractor or experienced DIYer? The PolySeal liquid is also available on its own in 20 L jerry cans and 210 L drums — see the Bulk & Trade collection.
Shipping & returns

Delivery: courier nationwide via Bob Go, dispatched from Johannesburg within 1–2 business days. Delivery cost is calculated at checkout on your order's weight and destination — you see the price before you pay. Typical delivery is 3–5 business days to main centres.

Free collection: 3/4 Coppel Road, Alrode South, Alberton — Mon–Fri, 7am–4pm. We'll email you when your order is packed and ready.

Returns: 7-day cooling-off on unused, unopened items in original sealed packaging. Opened, mixed or part-used product can't be returned unless faulty. Faulty or incorrect items are covered for 6 months under the CPA.

Damaged in transit? Don't use it — email photos to shop@polyroads.com within 48 hours and we'll sort out a replacement or refund with the courier.

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