Kytun GRP Dry Fix Bonding Strip

Watertight protection for adjoining roofs

Key features:
  • Watertight, mortar-free roof junction
  • Lightweight GRP construction
  • 70mm or 110mm upstand options
  • Life expectancy of over 30 years
  • Virtually maintenance-free
€48.99 Regular Price €48.99
Bulky Product
Delivery in
2-3days
SKU
GDFBS110-x
Brand
Kytun

Create a watertight, mortar-free junction between adjoining roof coverings with the Kytun GRP Dry Fix Bonding Strip.

Designed for re-roofing above a party wall, it is ideal for terraced properties where one roof is being replaced and the neighbouring roof remains in place.

A cost-effective alternative to lead, this lightweight strip is easy to transport, handle and move around site, helping roofers install it quickly and efficiently.

Its traditional lead-like appearance provides a discreet finish, while its low theft value offers reassurance during installation and throughout its service life.

For homeowners, a life expectancy of over 30 years and virtually maintenance-free construction make it a practical choice for lasting protection.

For architects and specifiers, it offers an economical solution for joining different roof finishes without mortar.

Key Features
  • Dry fix system: forms a watertight junction above the party wall without mortar.

  • GRP construction: lightweight glass-reinforced plastic with a convincing traditional lead appearance.

  • 70mm central upstand: suitable for flat tiles or slates.

  • 110mm central upstand: suitable for profiled tiles.

  • Dimensions: 225mm wide × 3m long, available with a 70mm or 110mm central upstand.

  • Long service life: life expectancy of over 30 years.

  • Low maintenance: virtually maintenance-free once installed.

  • Assured manufacture: manufactured under a quality management system meeting BS EN ISO 9001.

  • Minimal scrap value: little to no theft value.

Downloads
Frequently Asked Questions
Is a bonding strip the same as a roof valley?

No. A bonding strip forms the junction between adjoining roof coverings above a party wall.

A roof valley channels rainwater where two roof slopes meet.

Use the component designed for the junction you are working on.

Can I use it where neighbouring roofs have different tile profiles?

It is designed for junctions between different roof finishes, but suitability depends on the combination of coverings and the roof detail.

Ask your roofer to check both sides of the junction against Kytun’s installation guidance before choosing the upstand size.

Does fitting it require access to the neighbouring roof?

Installation may involve working with the roof covering immediately beside the junction.

Your roofer should assess access requirements and agree any work affecting the adjoining property with its owner before starting.

Does the bonding strip replace fire stopping at the party wall?

No. Its purpose is to weatherproof the junction between roof coverings.

Fire stopping at the party wall must be addressed separately as part of the roof specification.

What should I check before ordering?

Confirm the roof coverings on both sides, the required upstand height and the total length of the junction.

Check the supplied strip length and the manufacturer’s overlap requirements so your roofer can calculate the quantity needed.

Is the stated life expectancy a guarantee?

No. Life expectancy indicates the anticipated service life; it is separate from a product guarantee.

Ask your supplier for any applicable warranty terms and installation conditions.