Roofing Quotes in Portsmouth: How to Compare Them Line by Line (2026)

Get three roofing quotes in Portsmouth for the same re-roof on a two-storey terrace and you could easily see £8,400, £11,200 and £13,500. That's a 60% spread, and it's not unusual. Usually the three quotes are pricing three different jobs. One includes scaffold for a mid-terrace with a pavement licence and one doesn't. One prices a breathable membrane and new treated battens, another plans to reuse the old battens. Much of Portsea Island is Victorian and Edwardian terracing, so you're mostly dealing with old slate and clay roofs that take salt-laden south-westerlies straight off the Solent. On those roofs the fixings and the lead spec decide how long the job lasts. This guide goes through a proper quote line by line so you can tell which price is the real one.

Why Roofing Quotes in Portsmouth Vary So Much

The biggest driver of the gap is scope, not greed. A quote written after 10 minutes on the pavement looking up will price what the roofer can see. A quote written after someone has been up a ladder, looked in the loft and checked the chimney flashings will price what the roof actually needs. In our experience 2 out of 3 "cheap" quotes leave out scaffold, timber repairs or leadwork, which then turn up as extras.

Local conditions widen the spread further. Portsmouth gets roughly 750mm of rain a year, well below the UK average of about 1,160mm (you can compare figures on the Met Office's UK climate averages). But it's one of the windier, more exposed spots on the south coast, and that changes how a roof has to be fixed. A roofer who normally works inland may price the job as if it were in Basingstoke. A local roofer will price for Southsea.

Demand plays a part too. After a run of autumn storms, good Portsmouth roofers are often booked 4-8 weeks ahead, and busy firms price high because they don't need the job. If you want a fair, itemised price from a local team, Roof Repairs Portsmouth will inspect the roof properly before putting anything in writing.

What a Proper Roofing Quote Should Show, Line by Line

A quote that just says "re-roof, £9,500" can't be compared with anything. On a re-roof or large repair, look for these lines.

Access and scaffold

• Scaffold hire, erection and removal, with the hire period stated (usually 4-6 weeks). On a Portsmouth terrace this is typically £900-£1,800.
• Whether a pavement licence or highways permit is included, as most front elevations on Portsea Island sit right on the pavement.

Strip and preparation

• Whether sound slates are being salvaged and reused, and what percentage they're assuming. Reusing 50% of Welsh slate can knock £1,500 or more off, but only if the slates are actually sound.
• A day rate or per-metre price for replacing rotten rafters or sarking boards, since nobody knows the full extent until the roof is open.

Underlay, battens and covering

• The underlay named by type, ideally a breathable membrane rather than "new felt".
• Battens specified as treated and graded to BS 5534 (commonly 25 x 50mm), not just "new battens".
• The tile or slate named by make, size and quantity, plus the fixing method (nails, clips, or both).

Ridge, verge and leadwork

• Ridge and verge system stated: traditional mortar bedding or a mechanical dry-fix system.
• Leadwork listed by item (chimney flashings, soakers, valleys, abutments) with the lead code. Code 4 is typical for flashings and soakers, Code 5 for valleys and back gutters.

Waste, VAT and guarantee

• Skip or waste removal included. A skip in Portsmouth runs about £300-£450, and a full strip often needs two.
• VAT shown clearly. Standard rate is 20% (see the current UK VAT rates on GOV.UK), and a firm turning over more than £90,000 must be registered for it. A £9,000 ex-VAT quote is really £10,800.
• The guarantee length and what it covers, separating workmanship from manufacturer cover.

The Coastal Spec Items That Separate Portsmouth Quotes

Two quotes can look identical on paper and still be miles apart here. On a coastal roof the cheap parts fail first.

Fixings that survive salt air

Galvanised nails corrode noticeably faster within a few miles of the sea. On a Southsea or Eastney roof, nails can rust through in 15-20 years when the slates themselves would last 80 or more. A good quote will specify copper or stainless steel nails and stainless or aluminium tile clips. The upgrade typically adds £150-£350 to a whole roof.

Wind uplift and BS 5534

The current version of BS 5534 requires every tile and slate to be mechanically fixed. Older practice was to nail every second or third course. On an exposed coastal site, the roofer should also work out the fixing pattern for the wind zone, which may mean extra clips on the eaves, verges and ridge. If a quote doesn't mention BS 5534 or a fixing specification, ask. If the roofer looks blank, that tells you something.

Lead code and detailing

Thin lead is the easiest way to bring a price down. Code 3 used where Code 4 should be can split within a few years as it expands and contracts. A properly specified quote names the code for each lead item, so you can check you're comparing the same thing.

How to Compare Roofing Quotes Like for Like

Put the quotes side by side and go through them one line at a time. Anything one quote includes and another leaves out, write down and ask about. Most of the 40-60% gap disappears once you add the missing lines back. A £7,900 quote with no scaffold, no skip and "reuse existing battens" can end up costing more than an £11,000 quote that includes all three.

Then put a cost on the unknowns. Ask each roofer for the rate they'd charge for extra timber (often £45-£80 per metre of rafter, or a day rate of £250-£350 per roofer) and for any lead found to be failing once the roof is open. A quote with no allowance at all tends to grow halfway through the job.

Finally, compare timescales and weather allowances. A re-roof on a Portsmouth terrace normally takes 5-10 working days. Ask what happens if a southwesterly blows in mid-strip. A professional will have temporary sheeting and a plan for it. We've covered deposits, staged payments and how to protect your money in our guide to paying for roof work in Portsmouth, including deposits and staged payments, which is worth reading before you sign any of the quotes.

Red Flags on a Roofing Quote

Some problems show up in the quote itself before any work starts. Watch for these:

• Cash only, or a discount "if you pay cash". This usually means no VAT, no paper trail and nothing to fall back on if the work fails.
• No business address, or just a mobile number and a first name. If you can't find them, you can't hold them to a guarantee.
• A "today only" price or pressure to sign on the doorstep. If you agree a contract at home, the Consumer Contracts Regulations 2013 generally give you 14 days to cancel, and a trader who skips that information is breaking the rules.
• Vague wording like "repair roof", "fix leak" or "replace tiles as needed", with no quantities or materials.
• A price that's 30% or more below the others with no clear reason.
• No mention of scaffold on a two-storey job. Either it's missing from the price or they plan to work off ladders, which isn't safe or legal for most roof work.

Two or more of these together is a good reason to walk away.

Questions to Ask Before You Accept a Roofing Quote

These questions sort the careful roofers from the rest within a few minutes:

• What underlay, battens and fixings are you using, and do they meet BS 5534 for this wind exposure?
• Which lead code are you using for each flashing, and are you replacing or reusing the existing lead?
• What's your rate for extra timber or hidden damage, and will you show me before doing it?
• Is scaffold, the pavement licence and the skip all included?
• Is the price with or without VAT, and are you VAT registered?
• How long is the guarantee, what does it exclude, and is it insurance-backed?

A roofer who answers clearly and puts it in writing has usually priced the job properly. One who gets defensive now will be worse when something goes wrong.

What a Fair Roofing Quote in Portsmouth Looks Like in 2026

As a rough guide, these are typical 2026 prices for common Portsmouth jobs, including scaffold and waste but before VAT where the firm is registered:

• Full re-roof on a two-up two-down terrace (around 45-55m²): £8,000-£12,500 in concrete tile, £11,000-£16,000 in natural slate.
• Re-roof on a three-bed semi in Cosham or Drayton: £9,500-£15,000.
• Re-leading a chimney (flashings, soakers, back gutter): £650-£1,400.
• Fixing a handful of slipped slates from a ladder or roof ladder: £150-£350.

If one of your quotes is well outside these ranges, ask why. There may be a good reason, such as a steep roof, difficult rear access or reclaimed slate to match a conservation area. Or it could be one of the red flags above. For sorting out tradespeople generally, TrustMark's government-endorsed register is a useful independent check alongside the quote.

Frequently Asked Questions About Roofing Quotes in Portsmouth

How many roofing quotes should I get in Portsmouth?

Three is usually enough. Any more and good roofers start to lose interest. In busy periods after storms, allow 2-3 weeks to get all three back, as good local roofers are often booked several weeks ahead.

Why is one roofing quote so much cheaper than the others?

Usually because it leaves something out, such as scaffold, the skip, new battens or replacement lead. Sometimes it specifies cheaper materials like galvanised nails instead of stainless, or thinner lead. Add the missing lines back in and compare again before deciding.

Should a roofing quote include VAT?

It should say clearly whether VAT is included. VAT-registered firms add 20%, and any business turning over more than £90,000 a year must register. A small sole trader may not charge VAT at all, which is legitimate. A firm offering to "leave the VAT off for cash" is not.

Do I have to pay for a roofing quote in Portsmouth?

Most roofers quote for free on standard repairs and re-roofs. A detailed survey with drone photos or a written condition report may cost £100-£250, and some firms deduct that from the job price if you go ahead.

Want to learn more about comparing roofing quotes in Portsmouth? Click here to contact us.