# LLPT JDT450P2E Joist Tape, 101 mm x 15 m, 2 Packs

Packs: LLPT JDT450P2E joist tape is a two-pack of 101 mm-wide, 15 m rolls intended for decking beams and joists. Its butyl adhesive and claimed waterproofing suit buyers protecting timber under outdoor decking, though customer feedback is mixed on adhesion and durability.

- [Original product page](https://bargainpostbox.co.uk/product/llpt-jdt450p2e-joist-tape-101mm-15m-two-pack)
- [View offer](https://bargainpostbox.co.uk/visit/llpt-jdt450p2e-joist-tape-101mm-15m-two-pack)
- Market: UK
- Language: en-GB
- Currency: GBP
- Brand: LLPT
- Model: JDT450P2E
- Category: Tools & Garden > Hardware & Building Materials
- Price: 29.74 GBP
- Previous price: 34.99 GBP
- Discount: 15%
- Price checked: 2026-11-12T18:00:40.284Z
- Rating: 4.4 / 5
- Reviews: 523

Prices and deal status are the latest recorded data, not a guarantee of availability. Confirm the price and availability with the store.

## At a glance

- Two rolls, each listed as 101 mm wide and 15 m long, provide tape for decking joists and beams.
- Butyl, one-sided adhesive is described as waterproof and intended for outdoor construction.
- The listing recommends cleaning and drying the surface before application and describes a quick-release liner.

## Pros

- The 101 mm width offers more coverage across a joist than narrower tape options, based on the listed dimensions.
- The two-roll pack is specifically presented for decking and beam protection.
- The listing claims a waterproof butyl adhesive and weather resistance.

## Specifications

### Identity
- Brand: LLPT
- Model: JDT450P2E
### Dimensions and installation
- Roll size: 101mm x 15 m
- Listed dimensions: 10.1W x 0.1Th centimetres
- Thickness: 1.22 Millimetres
- Weight listed: 3.6 Kilograms
- Adhesive format: roll
- Adhesive location: one-sided
- Adhesive side count: 2
### Materials and protection
- Adhesive material: Butyl
- Water resistance listed: Waterproof
- Colour: Black
- Surface recommendation: Multi Surface
- Compatible material: Plastic
- Item resistance: high/low temperature, weather, water
- Tensile strength listed: 110 Pounds Per Inch
- Upper temperature rating: 182 Degrees Celsius
### Pack and use
- Recommended uses: Construction, Outdoor

## Before you buy

- The listing claims up to 50 years of durability and gives an operating temperature range of -25°C to 80°C in feature text, but these are manufacturer claims rather than independently verified performance figures. Apply to a clean, dry surface as instructed.
- Listing details are inconsistent: one feature gives adhesive tensile strength as 50g/cm while the technical field lists tensile strength as 110 Pounds Per Inch. Temperature information also differs, with feature text stating -25°C to 80°C and a separate field giving an upper temperature rating of 182 Degrees Celsius. Confirm which figures apply before relying on a specific performance limit. The adhesive side count is listed as 2 while its location is described as one-sided.

## A good fit for

- Decking projects needing a wider joist tape roll for beams or joists beneath boards.
- Buyers who want two rolls of butyl tape for outdoor construction and will prepare surfaces clean and dry.

## Less suited to

- Buyers who need a confirmed temperature or adhesive-strength rating, since the listing gives inconsistent figures.
- Projects where reliable adhesion or tear resistance is essential without allowing for the mixed customer feedback.

## Customer feedback

Customer feedback reports good quality, ease of use and functionality, including use on beams beneath decking. Stickiness and durability receive mixed reactions, with some reporting inadequate adhesion or tearing. That variation matters because a waterproofing claim depends on the tape staying attached. Aggregate ratings are generally favourable, but the distribution also includes a notable one-star share, and ratings alone do not identify why customers chose them.
- Positive themes: Customers describe the tape as good quality and easy to use.
- Positive themes: Feedback mentions useful functionality for beams beneath decking.
- Mixed feedback: Feedback on stickiness ranges from good adhesion to reports that it is not sticky enough.
- Mixed feedback: Durability reactions vary, with some customers finding it durable and others reporting that it rips.

## Frequently asked questions

### How many rolls are listed?
The title and details identify a two-pack, with two items listed.
### What are the listed roll dimensions?
The size field says 101mm x 15 m. The title also specifies 101mm x 15m.
### What should I know about the tape's temperature and strength claims?
The listing gives inconsistent strength and temperature figures. See the listing-details note and confirm the applicable ratings if they matter to your project.
### How should the tape be applied?
The feature text says to clean and dry the surface before applying the tape and describes a quick-release liner.

## Alternative options

- [HD Protect, Joist Tape, Premium Joist and Flashing Tape Perfect for Decking, Superior Self Sealing, Extends The Life of Timber Joists by Preventing Rot, \(118 Millimetres x 20 Metres, 1, Count\)](https://bargainpostbox.co.uk/visit/llpt-jdt450p2e-joist-tape-101mm-15m-two-pack)
- [Hanotic Decking Tape 50mm x 15.2m, 6 Rolls Waterproof Deck Joist Tape \| Weather Resistance and Anti-Corrosion, Beam Joist Protection Butyl Tape, Self-Adhesive for Wood Joists Decks Beams Roof Rv](https://bargainpostbox.co.uk/visit/llpt-jdt450p2e-joist-tape-101mm-15m-two-pack)
- [ADHES Deck Joist Tape, Adhesive Butyl Decking Tape 15cm x 15m 1 Rolls \| Waterproof Joist Tape for Decking, Deck Flashing Tape, Ideal for Wood Decks Beams Roof, Outdoor Construction Use](https://bargainpostbox.co.uk/visit/llpt-jdt450p2e-joist-tape-101mm-15m-two-pack)
- [Ordfingo Decking Tape 50mm x 15.2cm - 6 Rolls, Waterproof Joist Tape 2Inch \| Weather Resistance, Anti-Corrosion, Self-Adhesive Butyl Deck Joist Tapes for Decking Wood Joists Decks Beams Roof](https://bargainpostbox.co.uk/visit/ordfingo-zta0102-decking-joist-tape)
- [Hanotic Decking Tape 50mm x 15.2m, 8 Rolls Waterproof Butyl Deck Tape \| 2'' X 50' Weather Resistance and Anti-Corrosion Joist Tape for Extend Deck Life, Self-Adhesive for Wood Decks Rv Beams Roof](https://bargainpostbox.co.uk/visit/llpt-jdt450p2e-joist-tape-101mm-15m-two-pack)
- [ADHES Deck Joist Tape 10cm x 5m, 4 Rolls Weather Resistance & Waterproof \| Joist Tape for Decking, Deck Flashing Tape, Butyl Joist Tape, Ideal for Wood Decks Beams Roof, Outdoor Construction Use](https://bargainpostbox.co.uk/visit/llpt-jdt450p2e-joist-tape-101mm-15m-two-pack)
- [Goumthe Deck Joist Tape, 8 Rolls 5cm x 15.2m Waterproof Butyl Tape Weather Resistant Deck Flashing Tape for Wood Joists Decks Rv Beams Roof](https://bargainpostbox.co.uk/visit/llpt-jdt450p2e-joist-tape-101mm-15m-two-pack)
- [HD Protect, Joist Tape, Premium Joist and Flashing Tape Perfect for Decking, Superior Self Sealing, Extends the Life of Timber Joists By Preventing Rot, 63 Millimetre x 20 Metre](https://bargainpostbox.co.uk/visit/llpt-jdt450p2e-joist-tape-101mm-15m-two-pack)
- [ADHES Deck Joist Tape, Adhesive Butyl Decking Tape 10cm x 15m 1 Rolls \| Waterproof Joist Tape for Decking, Butyl Joist Tape, Ideal for Wood Decks Beams Roof, Outdoor Construction Use](https://bargainpostbox.co.uk/visit/llpt-jdt450p2e-joist-tape-101mm-15m-two-pack)
- [Hanotic Decking Tape 50mm x 15.2m, 2 Rolls Waterproof Deck Joist Tape \| Weather Resistance and Anti-Corrosion, Beam Joist Protection Butyl Tape, Self-Adhesive for Wood Joists Decks Beams Roof Rv](https://bargainpostbox.co.uk/visit/llpt-jdt450p2e-joist-tape-101mm-15m-two-pack)
- [Bafeil 10 Pack Decking Risers Adjustable Decking 60-140mm Pedestal \| for Composite and Timber Joists, Deck Levelling Feet Heavy-Duty Support Base PP Black for Garden Decking](https://bargainpostbox.co.uk/visit/llpt-jdt450p2e-joist-tape-101mm-15m-two-pack)
- [Decoralin Decking Spacers 4-Pack – Multi-Size Board Gap Tool for 5mm, 6mm, 8mm, 10mm – Yellow Metric Spacing Tool for Decking & Scaffold Boards](https://bargainpostbox.co.uk/visit/llpt-jdt450p2e-joist-tape-101mm-15m-two-pack)

## Add-ons

- [3Dimensional Studio Decking Spacer 4 Pack Multiple Gap width's 4mm, 5mm, 6mm, 8mm on Same Spacer., Green,](https://bargainpostbox.co.uk/visit/llpt-jdt450p2e-joist-tape-101mm-15m-two-pack)

## Images

![LLPT JDT450P2E Joist Tape, 101 mm x 15 m, 2 Packs — 1](https://bargainpostbox.co.uk/i/mm4-dw6DYR1x5efJksVcoYqsAaGLFXv0XNmpfD1XYTRX2XYmh_RmPZHJR9zMRSASwSnWDInmC2CoXnPEHZ2o_6Kg_HS4CQDIMx2SxUwNzWRAI_49IO7T.jpg)

![LLPT JDT450P2E Joist Tape, 101 mm x 15 m, 2 Packs — 2](https://bargainpostbox.co.uk/i/wKfDgZlcKbBHA2p-bFvB-AVD7dc4-kqHRLA2Bxr4IJ5goTQFBlFtATLp5R_-bMzL73xELkDmNAgoNsWsyqKT3sxb-zDCdUcWtfxi020JtbSOnuxBa7Nj.jpg)

![LLPT JDT450P2E Joist Tape, 101 mm x 15 m, 2 Packs — 3](https://bargainpostbox.co.uk/i/gOtQuG_NViZJ1_3M7QqLNsoM5hPJkDu-w8I1CNlIwmPCg_lGb7QAFr6nXM2AVCoUIKFdFcGejC3IY2DZRkOLGp66uZnuyyQhyTIjAZo4fMwb9BhF2kR7.jpg)

![LLPT JDT450P2E Joist Tape, 101 mm x 15 m, 2 Packs — 4](https://bargainpostbox.co.uk/i/kJbI60Di8xcjjsWfsBi-BmK2yak8AONWjg5kib7nl7mjUJANB6OLtQMyuq3xrIocuDfZzqK4ZdJcRrHa8jJKMGxj6tlH83G64PFKwqPEtWqe8WZaHszw.jpg)

![LLPT JDT450P2E Joist Tape, 101 mm x 15 m, 2 Packs — 5](https://bargainpostbox.co.uk/i/7ma0UPmNx51xjBl858FAn_PtAP2J03_Uevr1e9rr7bcZsTLwWJ5QBQKFQlfoTF9Ha0_6v1w1YVHpmP1jqqSBtvaMrd45foYLWunsXg12xamkrXstZA4D.jpg)

![LLPT JDT450P2E Joist Tape, 101 mm x 15 m, 2 Packs — 6](https://bargainpostbox.co.uk/i/x-ufzWb3qMp_l_KjKSOmMcD4CcoB1zKiWOrUKmELfRDYJPY-v6SaCLsJD96sdGJCxy0edUY7gPuoPfmX6bB2zck-oyFnyoPyExnSaQj_zrTLwrke73o6.jpg)

![LLPT JDT450P2E Joist Tape, 101 mm x 15 m, 2 Packs — 7](https://bargainpostbox.co.uk/i/TIcfQb5b6smWasxjMm5o9VyYf-1MoBJ728ocjdWMRqXYlhrnWWQw0LO0PzI1VUvDJwX-lvxdSntCjlklwpUE-muYBUSCcuRsKp1r3uEWfGhPM4bOtYVH.jpg)