Scope of Works – Dormer Valley Strip-Out & Reinstatement
Provide suitable access equipment/scaffolding to safely undertake the works.
Carefully strip back the roof coverings to both dormer valley junctions, allowing sufficient working room to expose the existing valley construction.
Remove and dispose of the existing defective valley liners, associated battens, underlay and any failed or unsuitable detailing.
Inspect the exposed roof structure and valley support areas, making good minor timber defects where required.
Install new breathable roofing membrane/underlay, correctly lapped and dressed into the valley areas.
Install new treated roofing battens as required.
Supply and install correctly specified
GRP dry valley liners with a minimum 105mm upstand, providing suitable support and fixing in accordance with the manufacturer’s installation requirements.
Form and install a suitable
weathered saddle detail at the head of each valley/dormer junction to correctly manage water at this critical intersection.
Cut and reinstate the existing roof tiles neatly to both sides of each valley, replacing any damaged or unsuitable tiles where required.
Mechanically secure roof coverings and associated components as required.
Ensure all valley junctions, laps and terminations are correctly formed to provide a durable and weather-resistant installation.
Remove all resulting waste materials from site and leave the working area clean and tidy.
Final inspection of both completed valley details upon completion.
The proposed works address the underlying construction and detailing of both dormer valleys, rather than relying on localised sealants or temporary repairs, providing a defensible long-term solution to the existing water-ingress risk.
