What to Check in a Tiled-Roof Installation Quote

A pitched roof is a system of covering, fixings, battens, underlay, flashings, ventilation and drainage. Replacing isolated slates or tiles can be sensible when those adjoining components remain serviceable. This guide explains the practical checks a Bromley property owner should make before requesting or approving work.

Quick answer

A pitched roof is a system of covering, fixings, battens, underlay, flashings, ventilation and drainage. Replacing isolated slates or tiles can be sensible when those adjoining components remain serviceable.

tile in this decision

Clay and concrete tiles vary in weight, profile, minimum pitch and visual character. Structural suitability, compatible fittings and local appearance need to be checked before substitution.

How professional installation is planned

This is an overview for commissioning work, not instructions for climbing onto or constructing a roof. A competent contractor should plan access, temporary weather protection, stripping, substrate repairs, the complete new build-up and inspection of critical details.

• Confirm the existing structure and measured roof geometry
• Select a system compatible with pitch, deck, exposure and intended use
• Specify insulation, vapour control and ventilation as one build-up
• Detail eaves, verges, ridges, abutments, outlets and penetrations
• Plan scaffolding, edge protection, deliveries and waste
• Record concealed defects and agree variations before covering them
• Provide completion photographs, care information and written guarantee terms

What should be written into the quotation?

The covering name is not enough. The quotation should identify preparation, substrate, fixings or adhesives, insulation, ventilation, flashings, trims, drainage, access, disposal and responsibility for internal making good.

Treat installation as a sequence of hold points

A sensible programme pauses after strip-off and deck inspection, again after critical junctions are formed, and before completion. Photographs at those stages make hidden preparation and agreed details easier to verify.

• Pre-start specification agreed
• Substrate exposed and condition recorded
• Variations approved before covering
• Junctions photographed during construction
• Drainage and finish checked at handover

What should be inspected?

• Slipped, cracked, delaminating or missing coverings
• Fixing fatigue and repeated movement across the slope
• Ridges, hips, valleys, verges and abutments
• Underlay, battens and visible timber condition
• Ventilation and insulation at eaves and high level
• Matching materials and any conservation constraints

Access can change the repair method

Terraced and converted properties can have different access at the front and rear. The quotation should say whether scaffold, a tower or another planned system is assumed, and how materials and waste will move without damaging occupied areas.

• Front and rear access considered separately
• Shared routes agreed before work
• Protection below the work included
• Parking and delivery assumptions recorded

Weather can stop otherwise simple work

Wind, lightning, ice and heavy rain can make access or uncovered roofs unsafe. A realistic contractor will postpone work or use temporary measures when conditions do not support the agreed safe system. The HSE roof-work guidance explains the main requirements and hazards.

Questions to ask in the quotation

• Is failure localised or widespread?
• Can replacement materials be matched?
• What underlay, batten and ventilation work is included?
• How will valleys, chimneys and abutments be treated?

Related local service

For property-specific advice, see Slate and tile roof repairs. The service page explains inspection, access and quotation arrangements.

Frequently asked questions

When is a local repair sensible?

A repair is easier to justify when the defect is isolated and surrounding material is sound. Repeated failure, widespread deterioration or damaged support layers can change that decision.

Can old slates, tiles or fittings be reused?

Sound material may sometimes be retained or reused, but condition, matching, breakage allowance and any planning constraints should be assessed before promising a quantity.

How soon should a small defect be inspected?

Prompt inspection is sensible when water is entering, materials are loose or the problem is changing. Safety risks, wet electrics and bulging ceilings need immediate precautions.

Discuss your roof with a local roofer

For an inspection and written quotation in Bromley, call 020 3886 3911 or email yourbromleyroofers@gmail.com. Describe the property, the roof area and any visible leak or damage. Photographs taken safely from ground level or inside the loft can also help.