Changes to the way you can order
Due to increased delivery costs, we need to implement a minimum order value across our product ranges. With effect from Thursday 26th November 2020, the minimum order value will be £200 (ex VAT) / £240 (inc VAT). This will enable us to continue to keep our prices low and our service levels high. We thank you for your business and continued support during these unprecedented times.

Grace Bituthene GP

From  £157.20  inc VAT
From  £131.00  ex VAT
In stock
From  £157.20  inc VAT
From  £131.00  ex VAT
Product Description

Size: 1mm x 1m x 25m

Need to discusss your enquiry further? Please contact our customer services team at [email protected], who will be happy to help.

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Bituthene® GP is a self-adhesive rubber bitumen/HDPE waterproof membrane for low risk applications.

Size: 1mm x 1m x 25m

Weight: 30 kg

Storage: Store upright in dry conditions below +30°C


  • Waterproof - capable of resisting a hydrostatic head when fully supported (up to 1 metre of water)
  • Cold applied - safe, no flame, no heating, no torch-on equipment, self-adhesive overlap ensure continuity
  • Flexible - accommodates minor settlement and shrinkage movement
  • Rubber/bitumen - flexibility and resistance to most dilute acids and alkalis
  • Lighter roll - for ease of application
  • Longer roll - for less storage

Reduces installation risk - no risk of:

  • Over heating - that damages the membrane and affects performance
  • Under heating – poor membrane adhesion and lap sealing affects water tightness


The product is for low-risk applications only and is capable of resisting a hydrostatic head up to 1m. All concrete and masonry surfaces to which the membrane is to be applied must have a smooth finish. Surfaces should be clean, dry free of voids and any sharp protrusions. Masonry surfaces must be rendered to provide an even flush surface, if not rendered then all brick or blockwork must be flush pointed. For higher risk applications, we would recommend the use of Bituthene® 4000 or Bituthene® 8000.

Minimum ambient application temperature +5°C.

Ensure that all surfaces are clean, dry and free from ice/frost. Surfaces should be smooth, free from voids and protrusions, and any imperfections should be made good using Betec® NSM mortar.

All surfaces except those below ground bearing slabs should be primed with one coat of Primer B1 applied by brush or roller. Bituthene® GP shall be laid by peeling back the protective release paper and applying the adhesive face onto the prepared surface.

Bituthene® LM to be applied at necessary internal and external corners, penetrations etc. prior to applying the overall membrane.

Bituthene® GP should be brushed onto the surface to ensure good initial bond and exclude air. Adjacent rolls are overlapped 50 mm minimum at side and ends and well rolled with a firm pressure, using a lap roller to ensure complete adhesion and continuity between the layers.

On high walls it may be necessary to batten fix the membrane to prevent slippage.

For application over damp and green concrete, we would recommend to use Bituthene® 4000 or Bituthene® 8000 system using damp/green concrete tolerant primer.

Damaged areas to be repaired with an oversize patch applied to a clean dry surface extending 100 mm beyond damage and firmly rolled. Protect Bituthene® membranes immediately after application to avoid damage from other trades, construction materials or backfill, using only Protection 03 boards. If the area around the substructure can be drained to a low level outlet then GCP recommends the Hydroduct® range of drainage membranes.

Please note that Bituthene GP has replaced Bituthene 3000

Orders and Delivery

Orders and Delivery

Free delivery if your order is over £300 inc VAT. Orders between £240-£300 are subject to a £36.00 Inc VAT delivery charge. Any orders under £240, we are unable to accept.

When ordering on line you can specify the date of delivery, however we would not be able to specify the time of delivery on that day.

♦ Please note that we have a number of large vehicles, including articulated vehicles that may be used for delivery. Please advise us in the comments on your order if access to the delivery address is limited.

♦ Due to insurance guidelines, delivery personnel are unable to enter private residences. Delivery will be as far as possible to the kerbside of the delivery address. The recipient of the products is responsible for any additional lifting once the delivery has been made. Please bear in mind that Insulation products can be bulky and / or heavy.

♦ The delivery driver will require a signature to confirm the goods have been received.


† Unfortunately we, Insulation Express, cannot deliver to the Highlands & Islands of the UK. However we will be happy to deliver to a freight forwarding company on your behalf.

Returns and Refunds

Returns and Refunds

In the unlikely event that you need to return an item, please contact our team on [email protected] within 14 days of accepting delivery of the item. Restocking charges may apply. We will discuss this with you upon receipt of the cancellation request. Restocking charges will be applied where the products are no longer required AND NOT for goods returned because either defective or damaged. We usually charge 25% of value (minimum £25.00).

Please note that we cannot accept returns on special orders. Special orders may consist of items sent via third party shipping companies or made to measure products. If you are unsure on whether or not your item is a special order, please contact us on [email protected] prior to placing the order.

Free delivery on orders over £300! Free delivery on orders over £300 Terms and Conditions apply

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