Common Roofing Problems

Main problematic areas of a roof


Unfortunately, mortar is traditionally used to hold down and secure the roof tiles on gable end sections. These mortared verges are now becoming obsolete because they pose 2 long term problems:

a) As mortar is a porous material and subject to expansion through freeze/thaw action, mortared verges deteriorate and crack, and require regular maintenance.
b) The pieces of timber that tiles fix onto have their ends located in this mortar. With the mortar being regularly damp these timber lath ends nearly always become rotten.

The answer to this problem is to invest in having a dry verge system installed, which principally involves specialist uPVC caps being fitted around the edge tiles and providing a waterproof seal to this vulnerable part of the roof. If fitted correctly, this will give you an attractive finish which will need no further maintenance. The dry verge will also secure the tiles more effectively.

Dry verge systems are also available for slate roofs.

The Solution:
Continuous dry verge systems.
Available in a choice of colours.
Or Dry verge units.
Available in a choice of colours.


Traditionally roofing felt was fitted in this vulnerable area without any protection, so over time it will sag & perish. You can easily identify this problem when you see this part of the roofing felt has fallen off into the guttering. The felt above the eaves will then sag between the rafters. This area of the roofing felt is important because rainwater falling into the gutters will then splash back onto the fascia causing staining and eventually premature rot. Also any rainwater that may run down the roofing felt will not be able to exit past the fascia & eaves and will probably cause rot to the end of the timber rafters, fascia & eaves. This can easily be avoided.

Sagging felt between rafters.

The Solution:
Eaves Protectors.

Eaves protectors are best fitted onto a timber tilting fillet to replace the roofing felt where it exits from under the roof tile or slate just above the eaves. They also support the felt and bridge the gap between the fascia and guttering. This product can also be used in conjunction with eaves vents & bird combs.
For use with slates or tiles.

Roof extending

A common problem on houses which have mortar-bedded ‘Wet’ verges and bitumen felt is that with age the felt sags into the wall cavity enabling draughts and damp or rainwater penetration. To solve this the roof can be extended by adding additional gable rafters, creating a gable ladder enableing the new roofing felt to extend past the exterior wall surface. It is then possible to secure the felt properly by nailing to the new outer rafter thus offering complete protection. finishing with uPVC fascia, soffits and dry verges then completes and compliments the work.

Flat Roofs – GRP Fibre Glass or EPDM flat roof systems

Flat roof leaks can be a real headache but thanks to these new materials our customers can be confident that their roof will remain leak free for life.
These new products both have the benefit of being ‘cold laid’ so no heat source for application is needed.
GRP Fibreglass is hard wearing and lasts at least 20 years. It can be finished in a choice of colours and non-slip finishes. It is virtually maintenance free, highly UV resistant and we a so confident with this product that we can offer a 20 year guarantee.
GRP Fibreglass can also be used on pitched roofs to create a durable and stunning effect which by using ridge details simulates lead.

Velux Roof Windows

We are experienced at fitting Velux roof windows, flashings & blinds.

Guarantees on these products are 10 years for the window & 5 years for the blinds.

All our work comes with a guarantee subject to the customer’s requirements and materials chosen.

Useful Links:
Marley Eternit
Manthorpe Building Products
Velux Windows