Questions answered
Roofing questions, answered
Short, direct answers to the roofing questions that come up when something drips, slips or blows off. The answer comes first, then the reason, then what changes the cost.
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Why hire a local roofer rather than a national firm?A national firm and a local roofer can both fit a good roof. The difference shows up before…5 min read
Can you repair your own roof?Checking your roof yourself is worth doing, and most of it can be done with your feet on…5 min read
How do you put a tarpaulin on a roof?A tarpaulin only protects a roof if it is fixed down properly, and fixing it means working on…5 min read
Will roofing felt stop rain on its own?Roofing underlay slows rain down, but it is a back-up layer under the tiles, not a roof covering.…5 min read
How many years should a slate roof last?Natural slate has one of the longest lives of any roof covering. The slates often outlast what holds…4 min read
Flat roof pros and consA flat roof suits some buildings very well and others badly. The gains are mostly in cost, access…5 min read
Choosing a roofer and local roofs 20
- Why hire a local roofer rather than a national firm?
- How many roofing quotes should you get?
- What should a roofing guarantee cover?
- Can you get a government grant for a new roof?
- How much does a roofer charge per day or per hour?
- A roofer knocked on my door: what should I do?
- Can you cancel a roofing contract? The 14-day cooling-off period
- Should you pay a roofer a deposit?
- Roofer or builder: who should do the job?
- Do you need a party wall agreement for roof work?
- Building control in Adur and Worthing: who to call for roof work
- Roof work in Worthing and Adur conservation areas
- Roof work in the South Downs National Park: who decides?
- Do you pay VAT on roofing work?
- Do you need a scaffold licence for roof work in West Sussex?
- How to complain about a roofer
- Roofing terms explained: a plain-English glossary
- The best pubs in Worthing: a roofer's local guide
- Top barber shops in Worthing
- Watertight Worthing Roofing on video
Roof repairs 20
- Can you repair your own roof?
- Do roofers use scaffolding for every job?
- How long does a roof repair take?
- Is it condensation or a roof leak?
- My roof is still leaking after a repair: what now?
- Wet loft insulation: what to do
- Water stain on the ceiling: is it the roof?
- Do roof sealants work?
- Daylight through the roof tiles: should you worry?
- My roof only leaks in heavy rain: what is going on?
- Leaking where the roof meets a wall
- Parapet wall leaking: causes and repairs
- Porch roof repairs
- Blocked roof valley: why it leaks
- Can you fix a roof leak from inside?
- Can a small roof leak wait?
- Cracked mortar fillets: what they are and how they are fixed
- Birds nesting in the roof: can a roofer remove them?
- Leak around the soil vent pipe on the roof
- Why do roof repair quotes vary so much?
Emergency roof repairs 20
- How do you put a tarpaulin on a roof?
- Who is the best person to fix a leaking roof?
- What counts as a storm for home insurance?
- Roof tiles blown off in the wind: what now?
- Roof leak near a light fitting: what to do
- Ceiling bulging with water: what to do
- Can you repair your roof before the insurer agrees?
- What evidence do you need for a roof insurance claim?
- Roof insurance claim rejected: next steps
- Emergency flat roof leak: what can be done
- Chimney damaged in a storm: what to do
- Can snow damage a roof?
- Neighbour's roof tiles damaged my property: who pays?
- How long can a roof tarp stay on?
- Is accidental roof damage covered by insurance?
- Lead flashing blown off in the wind
- Is a roof leak worth claiming on insurance?
- Why do out-of-hours roofers cost more?
- Is it the gutter or the roof that is leaking?
- What does a loss adjuster look for on a roof claim?
Pitched roofing 20
- Will roofing felt stop rain on its own?
- What are the disadvantages of a pitched roof?
- How long does a tiled roof last?
- What causes slipped roof tiles, and can they be refixed?
- Can one cracked roof tile be replaced?
- What is the minimum pitch for roof tiles?
- How do you match old roof tiles?
- Rotten felt at the eaves: what is an eaves support tray?
- Rotten roof battens: signs and repairs
- Torn or perished felt under the tiles: does it matter?
- What are roof tile clips and does my roof need them?
- Do you need tile vents in a pitched roof?
- Interlocking or plain tiles: which is better?
- Cut roof or trussed roof: what is the difference?
- What is roof spread and how is it fixed?
- Can you walk on roof tiles?
- Vertical tile hanging: repairs and replacement
- Can you change the pitch of a roof?
- Is a hipped roof more expensive than a gable roof?
- What is a dry valley trough?
Slate roofing 20
- How many years should a slate roof last?
- What is the main disadvantage of a slate roof?
- How much does a roofer charge per slate?
- How much do roof slates cost in the UK?
- Why do slates slip?
- What is a slate tingle?
- What is nail sickness on a slate roof?
- What is the minimum pitch for a slate roof?
- Slate hooks or nails?
- Delaminating slates: what causes it
- Can a cracked slate be repaired?
- Can you walk on a slate roof?
- Slate roof valleys: lead, mitred and swept
- Matching old slates on a repair
- Is a slate roof more expensive than tiles?
- What is torching on a slate roof?
- Slate roof leaking: common causes
- What ridge goes on a slate roof?
- How long do fibre cement slates last?
- Repair or re-slate? How to decide
Flat roofing 20
- Flat roof pros and cons
- Why do so many UK houses have flat roofs?
- How long does a flat roof last?
- What are the disadvantages of EPDM rubber roofing?
- How much should an EPDM roof cost?
- What is the cheapest flat roof covering, and is it worth it?
- Why do insurers ask if you have a flat roof?
- Signs of a leaking flat roof
- Water pooling on a flat roof: is ponding a problem?
- What fall does a flat roof need?
- EPDM or GRP: which flat roof should you choose?
- Can you overlay an old flat roof?
- Blisters on a felt roof: should you worry?
- Do liquid flat roof coatings work?
- Can a flat roof be replaced in winter?
- Replacing a flat roof in a conservation area
- Do you have to insulate a flat roof when you replace it?
- Can you put a sedum green roof on a house flat roof?
- Can you walk on a flat roof?
- Replacing the flat roof on a dormer
Chimney repairs 20
- Do you need scaffolding for chimney repairs?
- What is the 3-2-10 rule for chimneys?
- Does house insurance cover chimney repairs?
- Spalling chimney bricks: what to do
- Should you cap a disused chimney?
- Damp on the chimney breast: is it the roof?
- Do you need permission to remove a chimney stack?
- Replacing a chimney pot
- Chimney sweep or roofer: who fixes what?
- Who pays for a shared chimney stack?
- What is a chimney back gutter?
- Can you reduce the height of a chimney?
- Can you repoint a chimney yourself?
- Is a TV aerial damaging my chimney?
- Should you render a chimney stack?
- How long does chimney repointing take?
- How often should a chimney stack be inspected?
- Do chimney waterproofing sealants work?
- Chimney breast removed but the stack left: is that safe?
- Birds in the chimney: fitting a bird guard
Skylights and roof windows 20
- How much do rooflights cost in the UK?
- Do roofers put in Velux windows?
- Is it cheaper to put in a window or a skylight?
- What size must an escape roof window be?
- Does a roof window on a side slope need obscure glass?
- Why is my Velux window leaking?
- Condensation on a roof window
- Misted roof window glass
- Electric and solar roof windows
- What size roof window do I need?
- What is the minimum pitch for a roof window?
- How long does it take to fit a roof window?
- Can a roof window be fitted from inside?
- Walk-on rooflights: are they safe?
- Fitting a roof window in a slate roof
- What U-value should a roof window have?
- Are roof windows secure?
- Are roof windows noisy in the rain?
- Roof window or dormer: which is right?
- Can you add a roof window to a top-floor flat?
Gutters, soffits and fascias 20
- Is guttering covered on house insurance?
- Signs your fascias need replacing
- What fall should a gutter have?
- Why is my gutter sagging?
- Are gutter guards worth it?
- How long do uPVC fascias last?
- How long do gutters last?
- Anthracite grey or black fascias: worth it?
- Green or mouldy soffits: what to do
- How long does it take to replace fascias and soffits?
- Why are my gutters overflowing?
- How to clear a blocked downpipe
- Seamless aluminium gutters: are they worth it?
- How far apart should gutter brackets be?
- Half round, square or ogee gutters?
- Fitting a water butt to a downpipe
- Shared gutter with a neighbour: who pays?
- Fascia capping over old timber: good idea?
- Gap between the roof and the gutter
- Leaking gutter joint: repair or replace?
Roof replacement 20
- What should a roof replacement quote include?
- Can you stay in your house during a roof replacement?
- What roofing material lasts the longest?
- What roofing material is most energy efficient?
- Should roofing be done in winter?
- How long does a roof replacement take?
- What is the most expensive part of replacing a roof?
- Can you replace just one side of a roof?
- Can old roof tiles be reused on a new roof?
- Will my roof timbers need replacing during a re-roof?
- Should you replace fascias and gutters with a new roof?
- What happens to the chimney when you re-roof?
- Do you need to empty your loft for a new roof?
- Telling the neighbours about a roof replacement
- Does a new roof add value to a house?
- How can you tell how old a roof is?
- Can you put a new roof over an old one?
- Is a metal roof a good idea for a UK house?
- What happens if it rains during a roof replacement?
- Should you re-roof before a loft conversion?
Lead roofing 20
- How long should a lead roof last?
- Do roofers still use lead?
- Why does roof lead crack?
- Is lead roofing safe?
- What lead code is used for flashing?
- What are lead soakers?
- Lead flashing pulling out of the wall
- White powder on new lead: is it a problem?
- Lead or zinc?
- What is lead welding?
- Can you fit lead flashing yourself?
- What are lead wedges?
- Lead parapet gutters: repairs
- Does lead flashing sealant work?
- Copper or lead on a roof?
- What is a lead apron flashing?
- What is a lead saddle?
- How much does replacing chimney leadwork cost?
- Can a lead flat roof be repaired?
- What are rolls and drips on a lead roof?
Ridge tile repairs 20
- Can you just repoint ridge tiles?
- How do you fix ridge tiles?
- What is BS 8612?
- Why is my dry verge rattling?
- A ridge tile has fallen off: what now?
- Can a cracked ridge tile be repaired?
- Dry verge caps blown off
- Can you replace ridge tiles yourself?
- What is a hip iron?
- Types of ridge tile
- What is a verge undercloak?
- Can a ridge leak?
- What mortar mix is used for ridge tiles?
- Is mortar bedding still allowed for ridge tiles?
- Gaps under the ridge tiles: is that normal?
- What is a dry hip system?
- Can dry ridge go on a slate roof?
- Can dry verge be fitted to an old roof?
- How long does a ridge repair take?
- Are ridge tiles covered by home insurance?
Roof inspections 20
- Should you pay for a roof inspection?
- Are free roof inspections worth having?
- How long does a roof survey take?
- Can you check a roof from the ground?
- Roof survey or roof quote: what is the difference?
- RICS surveyor or roofer: who should survey the roof?
- Is your loft insulation enough?
- Preparing for a roofer's survey visit
- Why ask your roofer for photos?
- What does a flat roof inspection look for?
- When do you need a structural engineer for a roof?
- Do you need an asbestos survey before roof work?
- Do you need a bat survey for roof work?
- Signs of poor roof ventilation
- Snagging a new-build roof
- Roof survey when buying a leasehold flat
- Woodworm in roof timbers
- Your insurer wants a roof survey: what now?
- How do you measure a roof's area?
- Pole camera roof inspections
Roof cleaning 20
- Is getting your roof cleaned worth it?
- What time of year is best to remove moss from a roof?
- How often should a house roof be cleaned?
- Can you remove roof moss yourself?
- Do roof moss killers work?
- Can you use bleach on roof tiles?
- How long before moss grows back?
- Why does moss grow on the north side of the roof?
- How long does it take to clean a roof?
- Cleaning concrete roof tiles
- Black streaks on the roof: what are they?
- Can a roof be cleaned without scaffolding?
- Does home insurance cover moss damage?
- Roof cleaning run-off and the neighbours
- Do zinc strips stop moss?
- Steam cleaning a roof
- Moss on a flat roof: problem or not?
- Should you clean the roof before selling?
- Moss in roof valleys
- Can an asbestos cement roof be cleaned?
Conservatory roofs 20
- What is the cheapest way to replace a conservatory roof?
- Can you get a grant to replace a conservatory roof?
- What is the 4-year rule for conservatories?
- How long does a conservatory roof last?
- Leaking polycarbonate conservatory roof
- Condensation under a conservatory roof
- Ventilating a conservatory after a solid roof
- How long does it take to fit a solid conservatory roof?
- Conservatory gutters: replacement and leaks
- Why is my conservatory roof so noisy in the rain?
- Does a solid roof make a conservatory dark?
- Does a solid conservatory roof add value?
- Is a conservatory roof covered by insurance?
- Replacing individual conservatory roof panels
- Cleaning a conservatory roof
- Is self-cleaning glass worth it on a conservatory?
- Conservatory roof bar cappings
- What tile finishes suit a solid conservatory roof?
- Adding a roof window to a conservatory roof
- Is my conservatory dwarf wall strong enough?
Garage roofs 20
- What is the cheapest way to replace a garage roof?
- How to tell if a garage roof is asbestos
- Do you need a licence to remove an asbestos roof?
- What is notifiable non-licensed asbestos work?
- Testing a garage roof for asbestos
- How long does a garage roof last?
- Leaking garage roof: repair or replace?
- Is EPDM good for a garage roof?
- How long does a garage roof replacement take?
- Shared garage roofs in a block
- Do you need planning permission for a new garage roof?
- Is an asbestos garage roof safe to walk on?
- Condensation dripping from a garage roof
- Can you remove asbestos roof sheets yourself?
- Garage roof guttering
- Is a garage roof covered by home insurance?
- Should you seal an asbestos roof?
- Garage conversion: what the roof needs
- Carport roof replacement
- Replacing one garage roof sheet
Spray foam removal 20
- Does spray foam removal damage the roof?
- Why are people removing spray foam insulation?
- Can spray foam fix a leaking roof?
- Does spray foam cause condensation?
- Re-roofing a house with spray foam
- How long does spray foam removal take?
- Can you remove spray foam yourself?
- Roof ventilation after spray foam removal
- Is a spray foam guarantee worth anything?
- Does all spray foam have to be removed?
- Mould behind spray foam insulation
- Homebuyer survey found spray foam: what now?
- Spray foam under a flat roof
- Spray foam on a slate roof
- How messy is spray foam removal?
- Who pays for spray foam removal when buying or selling?
- How can you tell if you have spray foam insulation?
- Spray foam installer gone out of business: what now?
- What evidence do lenders want after spray foam removal?
- Do you need a new roof membrane after spray foam removal?
Commercial roofing 20
- How long does a commercial roof last?
- Is VAT charged on commercial roofing?
- Do you need planning for commercial roof work?
- Roof leaking in a shop or office: what to do
- Replacing industrial rooflights
- Industrial gutter lining
- Replacing a damaged roof sheet on an industrial unit
- Commercial roof condition surveys
- Can roof work go on while the business stays open?
- Green roofs on commercial buildings
- Solar panels on a commercial roof
- Church and village hall roof repairs
- Shop flat roof repairs
- Liquid coatings for metal roofs
- Roof dilapidations at the end of a lease
- Air conditioning units on a flat roof
- The duty to manage asbestos on a commercial roof
- Bird proofing a commercial roof
- Manufacturer warranties on commercial roofs
- Blocked outlets on a commercial roof
Horsham stone roofing 20
- Is Horsham stone a limestone or a sandstone?
- Should stone slate joints be mortared?
- What are shadow slates?
- How are stone slates fixed?
- Moss on a stone slate roof
- Leaking stone slate roof: common causes
- Ridges on Horsham stone roofs
- Horsham stone roofs in conservation areas
- Insuring a stone slate roof
- Sagging stone roof timbers
- Stone slate sizes
- Horsham stone or clay peg tiles?
- Checking the provenance of reclaimed stone slates
- Stone roofs in the South Downs National Park
- Torching under stone slates
- Building Regulations when changing a stone roof
- How long does relaying a stone roof take?
- Replacing a single stone slate
- Should you sell old Horsham stone slates?
- Hipped Horsham stone roofs
Every answer opens with a plain reply in a few sentences, then explains the cause, the fix and the things that move the price. They are grouped under the service each question belongs to, so related answers sit side by side.
Some questions only make sense on a coastal roof: why a ridge lets water in during a gale but not in a shower, or why salt leaves white marks on a soffit. Others apply to any house, such as whether a small leak can wait or whether a roof window needs planning permission.
For a deeper read on a subject, go to the guides. For your own roof, no answer replaces a look at it: ring 01903 299063, send a WhatsApp or use the form, and the survey photographs will show what is actually going on.
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