Radon/DPM Double Sided Butyl Jointing Tape 50mm x 10m

By Damplas Product code: 20591 Pack size: Each

Product Details

Looking for a practical and cost-effective way to damp proof your loft conversion or basement refit using butyl tape? Try this double-sided one from Damplas. 

The tape uses a high-quality adhesive that bonds firmly to damp-proof materials or membranes. This means you can count on it to stick in areas with high amounts of moisture in the air, such as bathrooms, attics or basements.

There's also no chance of moisture seeping through your walls or floor and causing damage, as the butyl material is totally damp proof. It's supplied on a roll, so it's easy to use too. All you need to do is overlap your membrane material by a minimum of 150 mm and then apply the tape in between the two layers. Once you're done, apply a length of Damplas single-sided jointing tape to seal up the overlap.

• A high performance butyl mastic tape

• Used for joining damp proof and DPM

• Adhesive on both sides

• Methane gas resistant (tested to ISO15015-1, achieves 0.07 ml/ linear metre/day)

• BBA-approved

Technical Specification
Brand Damplas
Width (mm) 50
Material Butyl
Manufacturer ID 9NDC801
Width (mm) 50
Safety Data Sheet click here
Length (m) 10
Delivery details

DELIVERY OPTIONS (UK mainland only)

Next Day Delivery – £5.00 or FREE for orders over £25

  • Order before 7pm Monday to Thursday for next business day delivery
  • Order Friday to Sunday before 5pm for Monday delivery
  • Orders placed after Sunday at 5pm will be delivered the following Tuesday

Pre-12pm Delivery – £10.00 or £5.00 for orders over £25, to arrive before 12pm on the scheduled days above

Saturday Delivery – £10.00 or £5.00 for orders over £25 & FREE for orders over £75 (order by 6pm Friday)

Sunday delivery – £10.00 or £5.00 for orders over £25 & FREE for orders over £75 (order by 4pm Saturday)

Times may vary for items being delivered directly from the supplier. For more information, please visit our delivery information page below.

Items over 30kg can only be delivered from Monday to Friday. If ordered before 6pm, please allow up to two business days for delivery. Orders placed after 6pm Thursday will be delivered after the weekend.

More about Delivery
Click & Collect details

Collection Details

Our opening times are 7am-8pm Monday-Friday, 7am-7pm Saturday and 9-4pm Sunday. Please check your local branch is open on the branch locator page, before you visit.

Once you have placed your order online, we’ll have it ready for you at the branch you have selected in as little as 5 minutes. We will hold your order for 14 days, after which we will automatically generate a refund to the payment type you used to place the order.

Don’t forget your mobile number – Make sure your mobile number is added so that we can text you when your order is ready to collect. Please wait for your text or email before coming to collect your items.

If an item is eligible for Next Business Day Collection in branch, the order must be placed by 7pm Monday to Thursday for collection the next day. Orders placed after 7pm on Thursday, and up to 5pm on Sunday, will be available for collection on Monday. For larger items over 30kg, please allow two business days.

Radon/DPM Double Sided Butyl Jointing Tape 50mm x 10m is rated 4.7 out of 5 by 31.
Rated 5 out of 5 by from High Quality Reliable Double Sided Butyl Tape High quality double sided butyl tape that was very effective in creating a strong waterproof seal between my box profile roofing sheets. Very tacky once the backing tape removed so you need to ensure you're fully ready and in a position to place the tape without the need to reposition it or the pieces you're joining together.
Date published: 2022-05-16
Rated 5 out of 5 by from Worked great to repair a fish pond - and more reasonable price Works as described. I needed some double sided joining tape to repair some cracks and holes in a PVC goldfish pond liner. the usual sources via eBay are a bit pricey esp as I needed quite a bit to make sure I got all the leaks. I wasn't sure if this would as well, but in fact it really does work well for the task. I forgot that it is blue! (usually its black) However it actually looks nice and it has certainly done the trick and I have a lot left over for when next needed. It works best if the material it is glued to is dry and clean. A slight roughing with fine/medium sandpaper helps then it really does stick well. A week or so later its all looking fine and I am really pleased to have found this.
Date published: 2022-04-16
Rated 5 out of 5 by from Excellent for sealing hatches Use it in a marine environment hard to get hold of in a hurry but tool station had it.
Date published: 2022-03-28
Rated 5 out of 5 by from Double sided butyl tape Excellent product, good for waterproofing behind panel joints etc., butyl tape use over many decades even on large scale housing renovations
Date published: 2022-03-09
Rated 5 out of 5 by from Best DPM tape on the market Unbelievable tape, can't pull apart
Date published: 2021-10-23
Rated 3 out of 5 by from Not the easiest... Does the job very well but the backing paper is extremely tricky to remove. You know how difficult it can be peeling off the backing from ordinary double-sided tape? Well this is much worse. Even leaving a little bit of paper overhanging in order to get a good grip of it just resulted in fingernails sticking to the butyl. Takes a lot of practice and patience.
Date published: 2021-10-21
Rated 5 out of 5 by from Super sticky if used correctly May seem over kill to some but cleaned dpm and dpc with damp cloth dried it. Worked back N forth pressing it together. Its as good as impossible to get back apart without nearly ripping the dpm good seal all round. Superb product. Kept tape in warm room untill used it not always possible but heyho
Date published: 2021-09-29
Rated 5 out of 5 by from Really strong bonding tape Really strong bonding tape used to stick old DPC to new
Date published: 2021-09-29
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