Hampshire · England
Bridgemary Sand Mastic
Window and door surrounds in Bridgemary need attention? We remove the old material, prepare the joints and seal them properly, with a 12-month guarantee.
- Old cement repairs round a window that have failed
- Tired mastic found when preparing windows for paint
- Silicone on a period window that looks wrong
How it works
Our applicators work methodically: protect, prepare, seal, tidy. For most jobs that takes anything from a few hours to a full day, depending on how many windows, and the area is left clean. For a job in Bridgemary, we agree the time, the access and parking before the day. Outdoor jobs depend on a dry day, since sealant needs a dry surface.
- We look at the surrounds with you and agree the joints to renew.
- Old mastic and any loose material are raked out.
- Deep gaps are packed so the mastic sits at the right depth.
- We apply the mastic by hand and shape it.
- We dress the finish so it sits neatly against the masonry.
Before we arrive
- Move anything stored near the joints
- Tell us if parking is tricky
- Mention any tricky access
Getting a quote
Asking for a quote is easy: let us know what needs doing and where and its rough size. A few photos by email make the job easier to understand, and we will come back to you with a quote.
Related advice
How we handle sand mastic in Bridgemary
Sand mastic skins over fairly quickly, but it takes longer to harden fully. Traditionally, sand mastic is left unpainted and we’ll advise if you’re redecorating. If you have gaps between timber frames and stone or brick and old cement repairs round a window that have failed, we can put it right, on stone surrounds, timber door frames and tenement windows alike.
Around Bridgemary, conservatories, garden rooms and patio doors are often part of the house. Those joints need the same attention as the main windows.
We stand behind the work with a one-year guarantee, so you are covered after we have gone.
- Location
- Bridgemary (PO13, PO12)
- Wider area
- Hampshire
- Cover
- A year, on every job
- Quote
- A clear price before any work starts
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
Should I try it myself first?
Some jobs are best left to a professional: high-level joints, fire-rated gaps, external movement joints and big jobs call for the right materials, safe access and experience.
If you’ve already had a go yourself, that is fine. We cut it out and start again.
What affects the cost of sand mastic
For a quick quote, just ask. The main things that affect it are:
- Mould in or behind the old joints
- Whether old sealant or filler has to be cut out
- How easy the joints are to reach
- Working hours on commercial sites
We do not show prices on the website, because the cost depends so much on the job itself. For a quick quote, please phone 0345 464 0079 or send us an email and we’ll talk you through it.
Helping us quote
You don’t need to know the technical terms. Just tell us:
- What’s wrong with the joints now
- Where the property is
- Pictures of the joints, sent by email
- Whether it’s a home or a business
For a quick quote, get us on the phone, or email us if that is easier. Tell us about the joints that need doing and we’ll talk you through the work before giving you a price.
Bridgemary questions
Can you help a landlord with a rental near Fareham station?
Yes, we work for landlords and agents. You can phone 0345 464 0079 or send us an email with the address and a few details, and we’ll give you a fixed price before we start.
Will you come out to Bridgemary?
Yes. Bridgemary is within the area we cover, which takes in towns, villages and rural addresses. We work across London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
Are you an approved applicator?
Yes. ARBOMaster is the approved applicator scheme for Arbo sealants, and we’re part of it.
Is there any odour?
Some sealants have a smell while they cure, but it fades. Ventilation helps.
Do I need to be at home?
We need access to the joints, so we will agree that with you when we book. For inside work, that normally means someone being in.
Do you do commercial work?
Yes. Larger jobs can be planned room by room or area by area.
What does sand mastic cost?
The cost depends on the size of the job, access and how much old sealant has to come out. Call for a quick quote and we will talk you through it.
What is sand mastic?
It’s the traditional filler for the joint round timber windows and doors. It’s made with sand and a linseed-oil-based binder.
Also near Bridgemary
More services for Bridgemary
Windows and doors in Bridgemary
Bridgemary is within about 2 miles of the coast, where wind-driven rain is a fact of life and, nearer the shore, so is salt air. Both are hard on the mastic around older windows and doors, which can dry out and crack sooner where a building faces the weather. The South East is one of the drier parts of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
In the older streets around St Matthew's, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall. Schools such as Rowner Junior are buildings too, and its window and door frames need their mastic kept sound, just like a home’s.
Bridgemary is about 1 mile north-west of Gosport, in Hampshire. We provide sand mastic to householders, landlords and businesses in Bridgemary, as part of our work across Hampshire. Across Hampshire, we cover 683 places, and Bridgemary is one of them.
Jobs for sand mastic in PO13 and PO12 is quoted and booked the same way as anywhere else. That includes homes and businesses on Camp Road, Copse Lane and Agnew Road and the roads around them. Nearby, we also carry out sand mastic in Rowner (1 mile north-west), Peel Common (1 mile west), Elson (1 mile south-east), Crofton (1 mile west) and Gosport (1 mile south-east). Further out, we also cover Havant (9 miles east), Eastleigh (13 miles north-west), Fareham (3 miles north-west), Horndean (9 miles north-east), Chandler's Ford (15 miles north-west) and Hedge End (9 miles north-west).
Local landmarks in Bridgemary
Locally, jobs take us to homes and businesses close to The Green Dragon pub and Bridgemary School and the streets around them. For rail, the closest station is Fareham station, roughly 2.5 miles north-west of the centre. Nearby you will also find Search (2.6 miles south-east) and Portchester Castle (2.7 miles north-east). Not far away are West of the River Alver and Portsdown Hill.
What happens if it’s left?
Not every filler suits an old window surround. Sand mastic matches what was there, which can matter on listed and conservation-area homes. Homes in smaller places like Bridgemary can face more weather, and failed outside joints let damp into walls. Inside, a split seal lets water into floors and panels just as it would anywhere.
Homes and businesses are quoted the same way: the amount of work, how we reach it and what it needs. Ask us for a quote and we’ll go through it with you.
Why Bridgemary customers choose us
- Experience in homes, commercial sites and hotels
- Quality sealants from Arbo and Everbuild
- Approved under the ARBOMaster scheme
- Any old sealant cut out fully, not covered over
Read our cost guide and our reviews.
Signs you need sand mastic in Bridgemary
Paint, silicone or cement used over old mastic causes problems. They do not move with the timber and we normally remove them.
These are the problems we are asked about most:
- Patchy fillers round a sash window
- Silicone on a period window that looks wrong
- Window mastic to renew ahead of painting
- Mastic dropping out of the joint
For landlords with property near Fareham station, cracked sand mastic around sash windows lets in the draughts tenants complain about.
What to look for in a quote
- How the joint is cleaned and prepared
- What the quote includes, VAT included or not
- Whether the sealant suits the joint
- The length of the guarantee
Keeping the joints in good condition
A little care helps the new joints last. Our advice:
- Ask us before painting near the mastic
- Inspect the joints round the windows every year or so
- Take care around the mastic when scraping paint
- Plan mastic work ahead of painting
When preparing windows for paint, take care around the mastic. It can be damaged by heavy scraping.
It’s best to renew mastic before painting the windows. Paint over cracked mastic only covers it up.
Work for landlords, hotels and businesses
From a single let to a portfolio, you get the same standard of work: old sealant fully removed, joints prepared properly and a one-year guarantee.
Letting agents often deal with us directly. Tell us the address, the job and how access works.