Surrey · England
Window Mastic in Dunsfold
Mastic around window and door frames, sills and patio doors for Dunsfold, backed by a one-year guarantee. Ask us for a quote.
- Untidy mastic left by window fitters
- Gaps between the frame and the inside reveal
- A bead that doesn’t match the frame
Frames and glazing around Dunsfold
Compared with the north and west, the South East gets less rain, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
In the older streets around Church of St Mary and All Saints, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint.
Dunsfold is about 9 miles south of Guildford, in Surrey. Our applicators cover window mastic for homes and businesses in Dunsfold and nearby, as part of our work across Surrey. Our Surrey coverage runs to 395 places, Dunsfold among them. You can also see our page for Crawley, about 16 miles away.
Work in GU8 works the same way as everywhere else we cover. If you need window mastic at a property on Binhams Meadow, Dunsfold Common Road and Nugent Close or anywhere close by, our applicators can take on the job. Neighbouring places we cover for window mastic include Loxhill (1 mile north), Hascombe (2 miles north), Alfold Crossways (2 miles south-east), Elmbridge Village (2 miles north-east) and Grafham (3 miles north). We also work in nearby towns such as Guildford (9 miles north), Woking (14 miles north), Farnham (12 miles north-west), Dorking (13 miles north-east), Frimley (15 miles north-west) and Haslemere (7 miles west).
Near you in Dunsfold
In Dunsfold, that means homes and buildings near Fir Tree Copse and The Sun Inn Public House. Dunsfold’s nearest station is Witley station, roughly 3.8 miles west. Well-known places in the area include Milford Hospital (4.3 miles north-west). Green spaces nearby include Lower Lake and Hydon's Ball.
How we handle window mastic in Dunsfold
Most frames have an outside joint and an inside one. Outside, the mastic keeps rain out; inside, the joint between frame and plaster stops draughts and tidies the reveal. We seal one or both, depending on what’s needed. We work on timber windows & doors, uPVC windows and window sills, and people most often call us about mastic that’s falling out in pieces and water coming in at the bottom corners of a door.
Homes in small places like Dunsfold often stand in the open, with little to shelter their windows from wind and rain. Exposed frames and sills lose their mastic sooner than sheltered ones.
The work is covered for a year after we finish. If there’s a problem with it, please call 0345 464 0079 or send us an email.
- Place
- Dunsfold (GU8)
- Wider area
- Surrey
- Guarantee
- One year on every job
- Price
- A clear price before any work starts
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
Looking after it afterwards
How long the joints last depends on use and care. Here’s what we suggest:
- Avoid blasting the frames with a pressure washer
- Clear any debris from frame drain holes
- Ventilate rooms so frames do not stay wet inside
- Check the mastic once a year
Have a look at the joints once a year, ideally after winter. Cracks and lifting edges are easy to spot early, and if anything looks wrong, just call 0345 464 0079 or drop us an email.
Look out for the warning signs: cracks in the mastic, gaps you can see light through, damp on the reveal or mould around the inside of the frame. If you notice one, it’s time to get the joint looked at.
Different surfaces, different methods
Aluminium frames
Metal frames expand in the sun and are often slim, with little room for error. A neat, narrow bead in a colour to match suits the frame.
Patio & French doors
Door frames take knocks and movement every time the doors are used. A flexible sealant copes with that, where a rigid one would crack.
Dunsfold: your questions answered
Do you cover Dunsfold for window mastic?
Yes. Our work covers London and the South East, and Dunsfold is part of that. You can ring 0345 464 0079 or send us an email and tell us what needs doing, and we’ll send you a clear quote.
Will you come out to Dunsfold?
Yes. Dunsfold 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 the inside joint as well?
Yes. Draughts often come through the inside gap too, so sealing both is often worthwhile.
Which products do you use?
It depends on the joint: anti-fungal sanitary silicone in wet areas, and other sealants where joints move or face the weather. Brands we use include Arbo and Everbuild.
Can you do several jobs on one visit?
Yes. Just list everything you need and you’ll get one quote.
How long before the joint can be used?
Cure times vary by product and the conditions. Before we leave, we will tell you the cure time.
Does the work come with a guarantee?
Yes, with our one-year guarantee. A yearly look at the joints helps them last.
Do you work on first-floor windows?
Yes, where it’s safe. For high or awkward windows, we will tell you what access is needed.
When something else is needed
Before booking, it’s worth knowing the limits:
- Faulty window hardware
- Soft or decayed wood in the frame
- Draughts through the window seals rather than the frame
Not sure which it is? You can phone 0345 464 0079 or drop us an email and we’ll tell you honestly.
Surfaces we seal
- Composite doors
- Timber windows & doors
- Aluminium frames
- uPVC windows
- Patio & French doors
- Window sills
When to call us in Dunsfold
On timber frames, paint and putty build up around the joint. Old mastic gets painted over and cracks under the paint, and the wood moves with damp as well as heat.
The problems people usually mention when they call are:
- Water coming in at the bottom corners of a door
- A bead that doesn’t match the frame
- Whistling draughts around closed windows
- Leaking joints at the ends of sills
For landlords with property near Witley station, cracked frame mastic tends to show up as a draught or damp complaint, so it’s worth checking between lets.
Questions to ask before you book
- Who turns up on the day
- Is the old sealant removed completely?
- What preparation is included
- Is VAT in the price?
Nearby places to Dunsfold
More services for Dunsfold
What happens if it’s left?
A quick bead over the top of old mastic looks like an easy fix, but it won’t grip old, dirty sealant. It peels before long, and water still gets in behind. The old mastic has to come out. Older cottages and farmhouses around Dunsfold can have timber floors and frames, and water through a failed joint can rot timber if it’s left.
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 you get with us
- 12-month guarantee on every job
- More than 20 years in sealant work
- 180+ five-star Google reviews
- Neat joints and a tidy finish
Take a look at what affects the cost and what customers say.
Quotes for window mastic in Dunsfold
The price is agreed before any work begins. It takes into account:
- Whether there’s mould to deal with
- How many areas need sealing
- Working hours on commercial sites
- The number and length of the joints
We don’t show prices on the website, because each job is priced on what it involves. For a quick quote, please ring 0345 464 0079 or email us and we’ll talk you through it.
What to tell us for a quote
What to tell us when you ask for a quote:
- Any previous sealing or DIY work
- The rough size of the job
- The problem you’ve noticed
- The type of property
Getting a quote is simple: let us know the job and the location and its rough size. Photos by email help us understand the job, and we’ll come back to you with a quote.
What we do, step by step
On the day, there’s very little for you to do. Show us the job and we will take it from there. The job generally takes anything from an hour or two to a full day, depending on how many frames there are from start to finish. For a village or hamlet like Dunsfold, the journey is planned in advance: let us know about lanes, gates and parking. We bring what the job needs, so it can be finished in one trip where possible.
- First we look at every frame and agree the list.
- We remove the old mastic and clean the frame and the wall.
- We fit backing rod in deep gaps so the sealant is the right depth.
- We apply a weatherproof sealant to match the frame and tool it neatly.
- Every joint is checked before we leave.
Before we arrive
- Let us know about parking restrictions
- Tell us about access, such as stairs, a lift or high-level joints
- Mention any sign-in or site rules at work premises
How to get a quote
There’s no standard price list. Instead, your job gets its own clear quote. To get started, call 0345 464 0079 or email us.