Roofing topic
New roofs
Replacement timing, specifications, surveys, programmes and what a complete quotation should include.
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22 clear answers
Open the closest match. Each answer explains practical checks, warning signs and when a quotation is sensible.
How do I know if I need a completely new roof?
Repeated leaks, widespread tile failure, deteriorated underlay, extensive timber defects and an uneconomic repair history can justify replacement, but age alone is not enough.
How long does a new roof normally take?
A straightforward tiled or slated house roof commonly takes around two to five working days once scaffold and materials are ready. Complex shapes, structural repairs and poor weather can extend the programme.
Can I stay in my house while the roof is replaced?
Usually yes, but expect noise, vibration, scaffold, restricted access and short periods when loft use is unsafe. Special arrangements may be needed for vulnerable occupants.
What should a proper new-roof quotation include?
It should define coverings, underlay, battens, ventilation, insulation, ridges, verges, leadwork, timber allowances, scaffold, waste, Building Control, programme, payment and guarantees.
Do I need Building Regulations approval for a new roof?
Often yes, particularly where more than a defined proportion is renovated or thermal elements are changed. The route should be confirmed for the specific project.
Should all old roof timbers be replaced during a reroof?
No. Sound structural timber can normally remain. Decayed, undersized or damaged sections should be identified and treated through a clear allowance or agreed variation.
What happens on the first day of a reroof?
The contractor normally confirms access and protection, strips a controlled area, inspects the exposed structure and starts making the roof weatherproof with the agreed new build-up.
Will my house be watertight every night during a reroof?
It should be left reasonably protected at the end of each shift, but the exact method depends on progress and weather. Ask for the contractor's temporary-weathering procedure.
Should a new roof include new leadwork?
Leadwork should be assessed as part of the system. Sound compatible details may sometimes remain, but worn, split or incorrectly detailed lead should not undermine a new covering.
Can old slates be reused during a reroof?
Yes, where enough slates remain sound, durable and suitable for the required headlap and fixing. Breakage, sorting labour and matching replacements must be allowed for.
Does a new roof add value to a house?
A documented new roof can reduce buyer risk and protect saleability, but it rarely adds its full cost pound for pound. Quality, appearance and compliance paperwork matter.
Should I replace gutters and fascias while having a new roof?
It can be efficient because access is already present, but sound roofline components do not need automatic replacement. Check condition, capacity, ventilation and junction details.
What hidden costs can arise during a reroof?
Common unknowns include rotten decking, damaged rafters, unsafe chimney masonry, undocumented insulation and extra layers beneath the covering. A good quote explains allowances and variation rates.
Can a new roof be replaced during winter?
Yes, with shorter work windows, controlled stripping and suitable weather. Wind, frost and prolonged rain can affect safety, adhesives and programme.
Do solar panels need removing before a reroof?
Usually panels over the work area must be safely isolated and removed by competent specialists, then refitted with compatible roof fixings after completion.
How should I choose the colour of a new roof?
Consider the property's brickwork, neighbouring roofs, planning constraints, product availability and how samples look in daylight. Online images can distort colour.
Should I replace an old roof before installing solar panels?
If the roof is approaching major renewal, reroofing first can avoid paying twice for panel removal and access. The decision should use actual condition and remaining life.
What is roof spread and how serious is it?
Roof spread is outward movement at the supporting walls, often linked to inadequate restraint or altered structure. Cracking or distortion warrants structural assessment.
Can rotten rafters be repaired without replacing the whole roof structure?
Localised decay may be repaired or strengthened, but the moisture source, remaining section and load path must be established before choosing a detail.
What is the difference between rafters and roof trusses?
Rafters are individual sloping structural members; prefabricated trusses form engineered assemblies whose components work together and should not be altered casually.
Can I convert a pitched roof into a flat roof?
Potentially, but it is a structural and planning alteration involving drainage, insulation, waterproofing, wind loading and Building Regulations—not a simple covering change.
What should a self-builder specify for a new roof?
The design should coordinate structure, covering, pitch, wind loading, underlay, battens, insulation, airtightness, ventilation, drainage, fire safety and interfaces.
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