Surrey · England
Deepcut Window Mastic
Our applicators work in Deepcut on mastic around window and door frames, sills and patio doors. Old sealant removed completely, joints prepared properly.
- White mastic on grey or black frames
- Gaps left after new windows were fitted
- Gaps between the frame and the inside reveal
About our window mastic in Deepcut
A cold draught around a closed window often comes from the frame edge. A new joint stops the air getting through. If the draught is through the window seals instead, we will tell you. We work on patio & French doors, window sills and uPVC windows, and common reasons people get in touch are untidy mastic left by window fitters and mastic that has split away from the wall.
Homes around Deepcut 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.
Big or small, it’s backed by our one-year guarantee in Deepcut and across Surrey.
- Where
- Deepcut (GU16)
- Region
- Surrey
- Guarantee
- 12 months on all our work
- Quote
- A clear quote up front
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
Landlord and commercial work in Deepcut
From a single let to a portfolio, the work is the same standard: old sealant fully removed, joints prepared properly and a one-year guarantee.
Mouldy or split sealant often shows up at the end of a tenancy, and it’s quick to put right between tenancies. Several properties can be quoted together.
How it works
We keep the work tidy and contained to the area we are working on, so you can carry on as normal. The job usually takes most of a day for a typical house, less for a few frames. For a job in Deepcut, we agree the time, the access and parking before the day. If the work is outside, the weather plays a part, as sealant needs a dry surface.
- We check how each frame can be reached safely.
- Old, cracked mastic is removed completely.
- Frame and wall are cleaned and must be dry before sealing, and primed where the sealant calls for it.
- Deep voids are backed, then the sealant is gunned in.
- We tool the joint so water runs off, then clear up.
Preparing for the visit
- Mention any leaks or damp you’ve noticed
- Move anything stored near the joints
- Mention any parking rules near the property
Ask for a quote
Call for a quick quote, or send an email if you’d rather. Tell us about the joints that need doing and we will talk you through the work and give you a clear quote.
Related advice
Honest limits
Before booking, it’s worth knowing the limits:
- Worn gaskets, brush seals or a door that has dropped
- Soft or decayed wood in the frame
- Faulty window hardware
If in doubt, phone 0345 464 0079 or drop us an email and we will say what we think.
Surfaces we seal
- uPVC windows
- Aluminium frames
- Composite doors
- Patio & French doors
- Window sills
- Timber windows & doors
Can I do it myself?
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.
The difference is mostly in the preparation and the product. Joints are cleaned back to sound surfaces and dried, and the sealant is matched to the joint and its conditions, and the work is guaranteed for a year.
What else we do in Deepcut
When to call us in Deepcut
Water runs down the glass onto the sill, so the sill ends and the joint below the frame are common leak points. When that sealant fails, water gets into the wall or under the frame.
People normally contact us after spotting something like this:
- Damp patches on the reveal after heavy rain
- Sealant in the wrong colour for the frame
- Leaking joints at the ends of sills
- Rushed sealant from a window installation
For landlords with property near Farnborough North station, sound mastic around windows and doors keeps out the draughts and damp that tenants notice first.
What your quote should include
- How long the guarantee is
- Is the old sealant removed completely?
- How the surfaces are prepared before sealing
- What happens if the job turns out different
How we quote for window mastic
We quote each job individually. These are the things that affect it:
- The number and length of the joints
- Mould in or behind the old joints
- Whether old sealant or filler has to be cut out
- Any working-time requirements on site
Homes and businesses are quoted the same way: the amount of work, the access and the products needed, along with when we can work on site. Call for a quick quote and we’ll go through it with you.
What we need to know
To make quoting easier, let us know:
- The type of property
- Where the job is, and your postcode
- How we’d reach the joints
- Any previous sealing or DIY work
Want a quote for window mastic? Please ring 0345 464 0079 or email us with a few details. You will know what we plan to do, and what it will cost, before any work begins.
Looking after it afterwards
Simple care keeps the joints in good condition. We recommend:
- Keep timber frames painted
- Wash the frames with mild soapy water
- Paint up to the joint, not over it
- Walk round the house once a year and look at the joints
Wipe the frames with soapy water when you clean the windows, and avoid solvent cleaners on the sealant.
Wet, windy weather is when failed mastic shows itself, but sealant goes on best when frames and walls are dry. Sorting cracked mastic early means the joint is sound before the bad weather.
FAQs for Deepcut
Is Deepcut within the area you cover?
Yes, we do. Our work covers London and the South East, from towns to the smallest places. The journey is planned ahead, so it helps to know about access.
I let a flat near Farnborough North station. Can you help?
Yes, we work for letting agents and landlords. You can ring 0345 464 0079 or email us with the address and a few details, and we will give you a fixed price before we start.
Are you fully insured?
Yes, we’re fully insured for every job we do.
Are you ARBOMaster approved?
Yes. We hold ARBOMaster approved applicator status.
When is the sealant fully cured?
It depends on the product and the temperature. We tell you how long to leave it before we go.
Do you take out the old sealant first?
Always. Sealing over old sealant is the main reason resealing fails early, so we never do it.
Is there any odour?
Sometimes, a little. Any smell clears as the sealant cures.
Can I do it myself?
Sometimes. Preparation is everything: all the old sealant out, and a clean, dry joint. We can always put it right if it fails.
Deepcut homes and 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.
Schools such as Sandringham Infant & Nursery School are buildings too, and its window and door frames need their mastic kept sound, just like a home’s.
Deepcut is about 1 mile east of Frimley, in Surrey. Homes, rented property, offices and hotels in Deepcut can book us for window mastic. The work is guaranteed for a year. Our area takes in 395 places across Surrey, from the larger towns to small villages. We also work in Reading, about 15 miles from Deepcut.
All of GU16 is covered for window mastic. Streets in the area include Deepcut Bridge Road, The Royal Way and Newfoundland Road, all of which we cover. We also cover Frimley (1 mile west), Frimley Green (1 mile south-west), Camberley (2 miles north-west), Watchmoor (3 miles west) and Old Dean (3 miles north). Larger places within reach include Guildford (7 miles south-east), Woking (6 miles east), Farnham (8 miles south-west), Egham (11 miles north-east), Walton-on-Thames (14 miles east) and Staines-upon-Thames (12 miles north-east).
Around Deepcut
Locally, jobs take us to homes and businesses close to Frimley Lodge Park, Tomlinscote School and Tomlinscote School and the streets around them. Deepcut’s nearest station is Farnborough North station, about 1.9 miles west of the centre. Other landmarks nearby include Frimley Park Hospital (1.9 miles west) and The Museum of The National Rifle Association (2 miles east). Open spaces near Deepcut include Danger Hill and Ash Ranges.