Surrey · England
Window & door mastic in Bentley, Surrey
Mastic around window and door frames, sills and patio doors for householders, landlords and businesses in Bentley. Fully insured, ARBOMaster approved and guaranteed for a year.
- Whistling draughts around closed windows
- Hard, cracked sealant around windows
- Cracked internal joints between frame and plaster
Window mastic in Bentley
Homes in Bentley have every kind of window: from uPVC casements to timber and aluminium, along with patio doors, French doors and sills. Each gets a sealant chosen for the frame and the wall it meets. We work on composite doors, window sills and patio & French doors, and people most often call us about a bead that doesn’t match the frame and draughty joints inside around the window.
Homes in small places like Bentley often stand in the open, with little to shelter their windows from wind and rain. That exposure dries out and cracks the mastic around frames and sills faster.
We stand behind the work with a one-year guarantee.
- Location
- Bentley (GU10, GU34)
- Wider area
- Surrey
- Guarantee
- 12 months on all our work
- Quotes
- Quoted 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: work at height, external movement joints, fire-rated sealant and large areas need the right product, the right access and the right method.
If you do try it yourself, take your time over the preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it does not work out, we can still put it right.
Also near Bentley
Other services in Bentley
How it works
We keep the work tidy and contained to the joints we are treating, so you can carry on as normal. The job generally takes a morning for a couple of windows and a door, and we tell you how long to leave it before we go. Somewhere as small as Bentley, access is often the only tricky part. For outside work, also let us know about exposed walls and any outbuildings involved.
- We check how each frame can be reached safely.
- All the failed sealant is cut away, along with any loose debris.
- The surfaces are cleaned and left dry.
- Deep voids are backed, then the sealant is gunned in.
- We tool the joint so water runs off, then clear up.
Getting ready for the visit
- Where the joints are inside, avoid wetting them before we arrive
- Keep children and pets away from the work area
- Let us know if you’ve seen damp or leaks
How to get a quote
To get a quote, phone 0345 464 0079 or drop us an email with the location and a short description of the problem. You’ll have a clear quote before any work starts.
Related advice
When it is not the sealant
In fairness, some problems need a different trade:
- Damp problems in the wall away from the window
- Soft or decayed wood in the frame
- A failed sealed unit that has misted up
Not sure which it is? You can call 0345 464 0079 or send us an email and we will tell you honestly before you book.
Joints and surfaces we work on
- uPVC windows
- Composite doors
- Timber windows & doors
- Patio & French doors
- Aluminium frames
- Window sills
How we quote for window mastic
Your quote is based on your job. We take into account:
- How much old sealant there is and how hard it is to remove
- Any mould that needs treating
- How many rooms, windows or areas are involved
- Which sealant suits the joint
A failed joint rarely gets cheaper to fix by waiting, because water and mould keep working on it. If you are unsure, ring 0345 464 0079 or drop us an email for an honest opinion and a quote.
What to tell us for a quote
Photos help, but a description is a good start. Try to tell us:
- What’s wrong with the joints now
- Whether it has been sealed before
- Where the property is
- How we’d reach the joints
Quotes start with a quick conversation. Tell us what’s wrong, where it is and how much there is. When it suits you, phone 0345 464 0079 or send us an email.
Different surfaces, different methods
uPVC windows
uPVC expands and contracts noticeably with temperature, so the joint needs a low-modulus sealant that stays flexible. We match white, brown, anthracite grey and black frames.
Window sills
Where a sill meets brick or render, the ends often crack first. A tight seal at each end keeps rain out of the wall.
When to call us in Bentley
Older frames were often sealed with products that set hard. Once it has hardened, the frame’s movement tears it from the wall, and a gap opens along one edge.
These are the problems we are asked about most:
- Whistling draughts around closed windows
- Sealant in the wrong colour for the frame
- Cracked internal joints between frame and plaster
- Rushed sealant from a window installation
Managing a site like Bentley Church of England Primary School? Then its window and door frames need their mastic kept sound, just like a home’s.
Before you book anyone
- Who does the work, and how experienced they are
- What insurance they hold
- What the quote includes, VAT included or not
- How the colour is chosen
Frames and glazing around Bentley
With historic houses such as Farnham Castle (about 3.8 miles north-east) nearby, there’s older building stock in the area around Bentley as well as newer homes. In older buildings, older timber frames in brick or stone need a different approach from a modern uPVC window. London and the South East are among 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 Church of St Mary, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint. If you let a flat or house near Bentley (Hampshire) station, sound mastic around windows and doors keeps out the draughts and damp that tenants notice first.
Bentley is about 4 miles west of Farnham, in Surrey. Bentley gets the same service as everywhere we cover: the old material taken out, joints prepared properly and a 12-month guarantee. Bentley is one of 395 towns and villages in Surrey we cover. For nearby work, see our Reading page.
Jobs for window mastic in GU10 and GU34 is quoted and booked the same way as anywhere else. Local streets include Station Road, Broadlands Close and Eggars Field, and we cover them all. Close by, we work in Isington (1 mile south-west), Blacknest (1 mile south-east), Bucks Horn Oak (2 miles south-east), Holt Pound (2 miles east) and Binsted (2 miles south). Larger places within reach include Guildford (14 miles east), Camberley (12 miles north-east), Farnham (4 miles east), Frimley (11 miles north-east), Haslemere (10 miles south-east) and Ash (8 miles north-east).
Near you in Bentley
We work in homes and buildings around The Star Inn. The closest station to Bentley is Bentley (Hampshire) station, roughly 0.8 miles south-east of the centre. Nearby you’ll also find Barley Pound (1.7 miles north-east) and Chase Community Hospital (5.9 miles south). The countryside around Bentley includes Farnham Park and Holybourne Hill.
For landlords and businesses
A neglected joint can let water reach the structure, which matters even more when someone else lives there. Keeping joints in good order is simple maintenance.
Letting agents often deal with us directly. Tell us the address, the job and how access works.
Questions from Bentley
Is Bentley in your area for window mastic?
Yes, Bentley is within the area we cover. We work across London and the South East. You can ring 0345 464 0079 or email us and tell us what needs doing.
Is Bentley within the area you cover?
Yes. Bentley is within the area we cover, which takes in towns, villages and rural addresses. Our work covers London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
Can you do upstairs windows?
Yes, as long as they can be reached safely. Tell us about access when you get in touch so we can plan the job.
Do you do commercial work?
Yes, regularly. We can plan bigger jobs in stages to suit the site.
I rent my home. Can I book you?
Yes, but check with your landlord or agent first. Landlords are often happy for the work to be arranged.
Does someone need to be in?
We need access to the joints, so we will agree that with you when we book. Indoors, that usually means someone at home.
Do you have insurance?
Yes. Mr Mastic is fully insured, and we have been doing sealant work for more than 20 years.
Where are you based?
We are a Crawley-based firm. We work across South East England, London and Scotland.