Metal Roofing in Cranleigh

Metal roofing is often assumed to be the noisy, industrial option, drumming in the rain and destined to rust. Inside the building it is the opposite: a standing seam roof on a fully supported deck with the right separation layer and ventilation is quieter than a thin tiled dormer, and modern zinc, aluminium and coated steel weather rather than corrode. The noise problem is almost always a missing deck, not the metal.

Wey Valley Roofing is family-run, founder Scott has spent more than 36 years on Surrey roofs and still answers the phone himself, and the same crew that folds our metal flashings does our chimney work in Cranleigh, so the detailing where metal meets masonry is handled by people who understand both.

Call 07428 300474 any time, day, night or weekend, and a real person will answer.

Metal Roofing Materials

The metal is chosen for the pitch, the span and the detailing it has to survive, not for the look alone. Zinc, aluminium and coated steel all behave differently once they are fixed down and start moving with the weather.

• Zinc: typically 0.7mm to 0.8mm gauge for standing seam, weathering to a stable grey patina, suited to low pitches down to around 3 degrees on a fully supported deck.
• Aluminium: lighter per square metre than zinc, usually 0.7mm to 1.0mm, coil coated, useful where the existing structure has limited capacity.
• Coated steel box profile: 0.5mm to 0.7mm sheet with a polyester or plastisol coating, fixed through the crown into purlins, on pitches from 5 degrees upward.
• Metal tile sheet: pressed steel panels that read as a tiled roof at a fraction of the dead load, useful on garages and outbuildings.

Selection is set out in writing before anything is ordered, so the gauge, the coating and the fixing method are all agreed rather than assumed.

Metal Cladding and Façades

Cladding on a wall is not simply roof sheet turned vertical. Profiled sheet on walls is covered by BS 5427, and the fixing centres, the side lap and the sealing of that lap change once the run is vertical and shedding water faster.

Sequence on a cladding elevation runs the same way every time: check and pack the supporting rails for line, fit the breather membrane and cavity closers, set a datum at the base, then fix from the bottom course upward with copings and corner flashings folded to suit the reveal. Fascias and soffits are worked in as part of the same set of folds so the junctions line through.

Standing Seam Roofing Systems

Panels and Clips

Standing seam panels are formed to width, usually 400mm to 530mm cover, and held by concealed clips at centres calculated for wind uplift under BS 5534. Fixed clips are used across the middle of a bay and sliding clips toward the ends so the sheet can expand along its length without tearing at the fixings. A 25 degree spell of sun on a dark zinc roof moves the metal, and the clip layout is what allows that.

Deck and Separation

Panels are laid on a fully supported deck, commonly 18mm WBP plywood, with a separation layer above it and ventilation designed against BS 5250 so warm moist air from inside does not condense on the cold underside of the metal. Where the build-up is warm rather than cold, the vapour control layer sits on the warm side and the insulation depth is set before the deck goes down.

Seams and Terminations

Seams are double locked with a seaming machine, then eaves, ridge, verge and abutment details are folded from the same coil so the colour and gauge match. Whether you need metal roofing in Cranleigh or garage roofing in Cranleigh, we cover the whole area, and the same folded detailing applies on a small garage as on a full house roof. Whether you need metal roofing in Cranleigh or metal roofing in Knaphill, we cover the whole area, worked by our own roofers rather than subcontracted crews.

Accreditations and Manufacturer Approvals for Cranleigh Homes

Plainly put: we hold no trade body membership and claim no approved-installer badge. What we hold is Public Liability Insurance, 36 years of Scott's work on Surrey roofs, and a 25-year written workmanship guarantee handed over before the team leaves the site, covering repairs as well as new roofs.

The standards we work to are named rather than hinted at: BS 5534 for fixing and wind uplift, BS 6229 on flat roofs, BS 5250 for ventilation and condensation, BS EN 12056 for rainwater sizing, and Lead Sheet Association guidance where lead abuts the metal. Where a re-roof triggers the 25% rule under Approved Document L, that is priced and explained at survey stage, not raised halfway through the job. Where an old garage roof turns out to be asbestos cement, it is assessed and the compliant route advised under the Control of Asbestos Regulations 2012; the removal itself is not work we carry out.

Domestic and Commercial Installations for Cranleigh Homes

Houses, Extensions and Dormers

Most domestic metal work here is a flat or shallow extension roof, a dormer cheek, or a porch, where a low pitch rules out tiles. Standing seam suits those spans, and the survey records deck condition, joist centres and the height of the abutment before a price is written.

Garages and Outbuildings

Box profile and metal tile sheet go on garages, workshops and stables, fixed into sound purlins with sealing washers and a matched ridge. If a repair will serve, we say so rather than quoting a full replacement.

Commercial Units

On light commercial roofs the work is usually sheet replacement, over-sheeting or replacement gutters and flashings, sequenced so the building stays watertight overnight. Whether you need metal roofing in Cranleigh or a new roof replacement in Cranleigh, we cover the whole area. Whether you need metal roofing in Cranleigh or metal roofing in Guildford, we cover the whole area, and because our roofers live and work across the Wey Valley, someone can usually be with you in Cranleigh within a day or two of your call.

Rainwater Goods and Roof Accessories

A metal roof sheds water faster than a tiled one, so the gutter has to be sized for the catchment rather than copied from the old one. Rainwater sizing follows BS EN 12056, which sets the outlet and downpipe capacity against roof area and rainfall intensity.

• Seamless aluminium gutter: rolled to length on site, no joints along the run, brackets at 800mm to 1000mm centres.
• Fall and outlets: set to a measured fall toward the outlet, with the outlet position chosen from the calculated flow rather than convenience.
• Accessories: snow guards on steeper metal pitches, ventilated ridge and eaves closures, walkway pads where plant needs access, folded soakers where the metal meets brick.

These items are quoted line by line alongside the metal roofing itself, so nothing appears later as an extra.

Four Things Worth Knowing

• Gauge, coating and clip layout are decided by span and exposure, and written into the quote.
• Ventilation and vapour control matter more on metal than on tile, because the underside runs cold.
• The guarantee is 25 years, in writing, on repairs as well as full roofs.
• Call any hour and a real person answers, and emergencies go to the front of the queue.