Surrey · England
Haslemere Window Mastic
Mastic around window and door frames, sills and patio doors for homes and businesses in Haslemere and across Surrey. ARBOMaster approved applicators, fully insured, with a one-year guarantee.
- Cracked or shrunken mastic around the frame
- Rain getting in at the frame or under the sill
- Mastic that is falling out in pieces
Window mastic in Haslemere, done properly
Behind a thin line of old mastic there’s sometimes a deep void. Packing it solid with sealant gives a joint that cannot flex, so deep gaps get backing rod first. The sealant then grips the two sides it should. If you’re dealing with cracked or shrunken mastic around the frame and mastic that’s falling out in pieces, we can put it right, on composite doors, timber windows & doors and patio & French doors alike.
Homes around Haslemere range from older properties to newer houses, and their windows range just as widely. The right sealant depends on the frame and on what it sits in.
You are covered for a year from the day we finish. If there’s a problem with it, please phone 0345 464 0079 or drop us an email.
- Location
- Haslemere (GU27)
- Wider area
- Surrey
- Cover
- A year, on every job
- Quote
- A clear price before work begins
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
Landlords, agents and businesses in Haslemere
Whether it’s one flat or a portfolio, you get the same standard of work: the old material taken out, careful preparation and a 12-month guarantee.
Letting agents often deal with us directly. Tell us the address, the job and how access works and we will quote.
What happens on the day
On the day, there’s very little for you to do. Point us to the joints and we will get on with it. The job generally takes most of a day for a typical house, less for a few frames. Parking around Haslemere is generally easier than in a town centre, but mention any lanes, gates or long drives. For outside work, side access and the height of the joints help us plan.
- First we look at every frame and agree the list.
- We remove the old mastic and clean the frame and the wall.
- Where gaps are deep, backing rod goes in first.
- We apply a weatherproof sealant to match the frame and tool it neatly.
- We clear up and check every joint is fully closed.
Preparing for the visit
- On commercial sites, let us know about site rules
- Let us know about earlier repairs to the joints
- Let us know if you’ve seen damp or leaks
How to get a quote
Getting a quote is simple: let us know the job and the location. A few photos by email make the job easier to understand, and we will come back to you with a quote.
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FAQs for Haslemere
Do you cover smaller places like Haslemere?
Yes, we do. We work across London and the South East, from towns to the smallest places. The journey is planned ahead, so it helps to know about access.
Do you work for landlords with property near Haslemere station?
Yes, rental work is part of what we do. Just phone 0345 464 0079 or send us an email and tell us about the property, and we’ll give you a clear quote.
Is the work guaranteed?
Yes. Every job comes with our one-year guarantee, and we are fully insured.
What sealant do you use?
We choose the sealant for the joint, not the other way round. Where it moves, gets wet or faces the weather makes a difference, and we will tell you what we are using.
Are you an approved applicator?
Yes. ARBOMaster is the approved applicator scheme for Arbo sealants, and we’re part of it.
Is it messy?
Tidy work is part of the job. We protect what’s around the joints.
How many windows can you do in a day?
A handful of frames is a short visit, while a whole house takes longer. We confirm the timing with your quote.
Can I paint over the new sealant?
It depends on the sealant. Some hybrid sealants can be painted; silicone cannot. Mention any painting plans before work begins.
DIY versus a professional finish
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.
Overfilling a joint is a classic DIY mistake. A thick, smeared bead looks untidy and doesn’t move well, and the joint depth matters as much as the finish.
Keeping the joints in good condition
A little care helps the new joints last. Our advice:
- Check the mastic once a year
- Don’t aim a pressure washer at the joints
- Clear any debris from frame drain holes
- Paint up to the joint, not over it
Silicone can’t normally be painted, so if you are planning to paint the frames or walls, tell us beforehand. We can use a paintable sealant where that matters.
Leaks usually show up in wet, windy weather, but resealing works best in dry conditions. Sorting cracked mastic early means the joint is sound before the bad weather.
Nearby places to Haslemere
Other services in Haslemere
Haslemere homes and the weather
Rainfall in the South East is lower than in much of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
Rented homes near Haslemere station change hands often, and renewing tired window mastic between tenants heads off draught and damp complaints. If you look after a building such as Shottermill Infant School, larger buildings have plenty of frames, and the mastic around each one ages. In the older streets around Church of St Christopher, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall.
Haslemere is about 11 miles south of Aldershot, in Surrey. Whether you are in the middle of Haslemere or further out, window mastic is available for homes and businesses alike. We cover 395 towns and villages across Surrey, from the larger towns to small villages. Our Crawley page covers work nearby, about 23 miles away.
Every address in GU27 is covered for window mastic, from the main roads to the quietest streets. If you need window mastic at a property on Church Road, High Street and Longdene Road or anywhere close by, our applicators can take on the job. Haslemere sits on or near the A286 and A287. Close by, we work in Shottermill (1 mile west), Woolmer Hill (1 mile south-west), Hammer (1 mile west), Bramshott Chase (2 miles north-west) and Kingsley Green (2 miles south). Within a short drive, we also cover Guildford (13 miles north-east), Farnham (9 miles north), Cranleigh (11 miles east), Ash (11 miles north), Godalming (8 miles north-east) and Farncombe (9 miles north-east).
Landmarks near Haslemere
In Haslemere, that means homes and buildings near Woolmer Hill School, The White Lion Public House and Royal School Haslemere. Haslemere has its own railway station: Haslemere station. Nearby you will also find Haslemere and District Hospital (0.6 miles north-east). The countryside around Haslemere includes Upper Lake and Lynchmere Commons.
What affects the cost of window mastic
Every job gets its own quote. This is what makes a difference:
- Any working-time requirements on site
- How easy the joints are to reach
- The number of rooms or windows
- The size of the job
Instead of a standard rate, we price the job in front of us: the amount of work, the old material and the access. The price is agreed before we begin.
What to tell us for a quote
When you contact us, it’s useful to know:
- Whether it has been sealed before
- The type of property
- Pictures of the joints, sent by email
- How many joints, rooms or windows are involved
For a quick quote, get us on the phone, or email us if that’s easier. Describe what needs sealing and we’ll talk you through the work.
Why it’s worth doing now in Haslemere
A cracked joint around a frame lets rain into the wall. Left long enough, it can stain inside walls, spoil plaster and rot wooden frames. A reseal is a much smaller job. Around Haslemere, water from a failed joint in an older home can soak into timber and plaster, and that is a much bigger job than renewing the sealant.
A failed joint rarely gets cheaper to fix by waiting, because water and mould keep working on it. If you are not sure whether it needs doing, phone 0345 464 0079 or email us for an honest opinion and a quote.
Why book with us
- A 12-month guarantee on all work
- Colour agreed with you before we start
- A choice of colours where the product allows
- 4.9 on Google from 180+ five-star reviews
What we cannot put right
Some problems need a builder, plumber or other trade rather than us:
- A frame that has rotted at the joint
- Broken hinges, locks or handles
- Damp coming through the wall itself rather than the frame joint
If in doubt, phone 0345 464 0079 or email us and we will say what we think before you book.
Joints and surfaces we work on
- Timber windows & doors
- Composite doors
- Aluminium frames
- uPVC windows
- Window sills
- Patio & French doors