Surrey · England
Ash Green Window Mastic
Window mastic across Ash Green and nearby, with old sealant always removed completely and a 12-month guarantee.
- Rushed sealant from a window installation
- Water coming in at the bottom corners of a door
- Sealant in the wrong colour for the frame
How we handle window mastic in Ash Green
Mr Mastic’s applicators have more than 20 years’ experience with window and door sealants. We are fully insured ARBOMaster approved applicators, and every job is covered by a 12-month guarantee. Common call-outs are for gaps where the sill meets the wall and hard, cracked sealant around windows, across patio & French doors, uPVC windows and window sills.
Around Ash Green, many homes face open ground, so their windows and doors take the full weather. Exposed frames and sills lose their mastic sooner than sheltered ones.
You’re covered for a year from the day we finish. If anything isn’t right with it, ring 0345 464 0079 or email us.
- Where
- Ash Green (GU12)
- Region
- Surrey
- Cover
- A year, on every job
- Price
- A clear quote up front
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
The process
You do not need to clear the whole room or building, only the area right around the joints. Everything nearby is protected, and the work takes a few hours for a handful of frames, longer for a whole house for a typical job. In a small place like Ash Green, access is normally the main thing to plan. For outside work, also let us know about exposed walls and any outbuildings involved.
- 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.
- Backing rod fills deep voids and the sealant goes in on top.
- The joint is shaped to shed water and the area tidied.
Getting ready for the visit
- Mention any leaks or damp you’ve noticed
- For business premises, tell us about site rules or sign-in
- Try not to wet indoor joints just before the visit
Ask for a quote
Every job is quoted individually. Just call 0345 464 0079 or email us with the details and send pictures if you have them.
Advice
What else we do in Ash Green
What affects the cost of window mastic
There’s no set price list. The quote depends on:
- Any working-time requirements on site
- How many rooms, windows or areas are involved
- How easy the joints are to reach
- How much old sealant there is and how hard it is to remove
Doing several joints on one visit is generally more efficient than separate visits, so tell us about everything that needs sealing. You will get one clear quote for the whole job.
What we need to know
To make quoting easier, please include:
- The rough size of the job
- If it’s domestic, commercial or a hotel
- Whether it has been sealed before
- The address or postcode of the job
Need a quote? Please ring 0345 464 0079 or drop us an email with a few details. You’ll know what we plan to do, and what it will cost, before any work begins.
Signs you need window mastic in Ash Green
Older frames were often sealed with products that set hard. Once it’s rigid, every bit of frame movement pulls at it, leaving a hairline gap down one side.
Signs it’s time to call us include:
- Rain getting in at the frame or under the sill
- Leaking joints at the ends of sills
- Sealant in the wrong colour for the frame
- Old mastic that has gone black or come away
If you live in an older home near Church of St Peter, frames set in older brick or stone need a sealant that suits the wall as well as the frame.
Questions to ask before you book
- How the colour is chosen
- Whether they’re fully insured
- Whether VAT is included
- Who turns up on the day
DIY sealant or a professional job?
The difference is mostly in the preparation and the product. We take joints back to clean, dry surfaces, and the sealant is matched to the joint and its conditions.
Some sealant jobs are within reach of a careful DIYer, like a short, easy-to-reach joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
FAQs for Ash Green
Do you work for landlords with property near Ash station?
Yes, rental work is part of what we do. You can ring 0345 464 0079 or email us with the address and a few details, and we’ll give you a fixed price before any work starts.
Do you cover Ash Green for window mastic?
Yes. We work across London and the South East, and Ash Green is part of that. Just call 0345 464 0079 or drop us an email with a few details of the job, and we’ll give you a clear quote.
Can I do it myself?
Sometimes. The key is preparation: remove all the old material and work on a clean, dry joint. If it does not work out, we can redo it.
Is it OK to seal over old sealant?
No, because it fails. We remove every bit of old sealant first.
Do you guarantee window mastic?
Yes. Our 12-month guarantee covers every job.
How long before the joint can be used?
Different products cure at different speeds, so follow the cure time we give you.
Do you have insurance?
Yes. Mr Mastic is fully insured, and we have been doing sealant work for more than 20 years.
What do you need from me for a quote?
Only a few details: the address or postcode, what’s wrong and any access issues. After that, simply call 0345 464 0079 or drop us an email.
What sealant work can’t fix
In fairness, there are a few things sealant will not fix:
- Penetrating damp from a failed cavity tray or render
- A sash or casement that will not close properly
- A failed sealed unit that has misted up
Not sure which it is? You can call 0345 464 0079 or drop us an email and we will tell you honestly.
Where we work in Ash Green
- Aluminium frames
- uPVC windows
- Timber windows & doors
- Window sills
- Composite doors
- Patio & French doors
Windows and doors in Ash Green
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. With historic houses such as Wanborough Manor (about 2.1 miles east) nearby, there’s older building stock in the area around Ash Green as well as newer homes. Where a home is older, older frames set in brick or stone need a sealant that suits them, and sometimes that’s traditional sand mastic.
For landlords with property near Ash station, renewing tired window mastic between tenants heads off draught and damp complaints. For site and facilities teams at buildings such as Ash Grange Primary School, the mastic around its windows and doors needs looking after like any other building’s.
Ash Green is about 2 miles east of Aldershot, in Surrey. Jobs in Ash Green get the same care as everywhere else we work: old sealant removed completely, careful preparation and a 12-month guarantee. Across Surrey, we cover 395 places, and Ash Green is one of them. There’s also a page for Reading, about 18 miles away.
Our applicators cover all of the GU12 postcode area for window mastic and the streets around it. If you need window mastic at a property on Compass Rose Road, Drovers Way and Ash Green Lane East or a nearby road, we can help. We also cover the places around Ash Green: Ash (1 mile west), Tongham (1 mile south-west), Seale (1 mile south), Ash Vale (2 miles north-west) and Sandy Cross (2 miles south-west). Further out, we also cover Guildford (6 miles east), Woking (8 miles north-east), Camberley (6 miles north), Farnham (4 miles south-west), Egham (15 miles north-east) and Frimley (5 miles north).
Landmarks near Ash Green
Around Ash Green, our work takes us to homes and buildings near The Dover Arms, The Connaught School and Ash Manor School and the streets around them. Ash Green’s nearest station is Ash station, roughly 0.6 miles north-west of the centre. Well-known places in the area include Farnham Castle (4.4 miles west) and Guildford Hospital (4.2 miles east). Open spaces near Ash Green include Ash Ranges and Hog's Back.
How to look after the new joints
Simple care keeps the joints in good condition. We recommend:
- Keep paint off silicone joints
- Make sure the drainage slots are not blocked
- Look round the frames every year or so
- Keep timber frames painted
Keep the new mastic undisturbed while it cures, for as long as we advise. Keep jet washers away from the frames.
Water gets in quietly when mastic fails. Often the first sign is a damp patch inside or flaking paint on the reveal. Catching it early keeps the fix to a reseal.
Why act early in Ash Green
A cracked joint around a frame lets rain into the wall. Over time that can mean damp patches, damaged plaster and rotting timber. Resealing now is a small job by comparison. Older cottages and farmhouses around Ash Green can have timber floors and frames, and water through a failed joint can rot timber if it’s left.
A few things move the cost up or down: the old material and how easily it comes out, whether mould needs treating, and whether the work is at height. Your quote takes all of that into account.
Why us?
- A 12-month guarantee on all work
- More than 20 years in sealant work
- We agree the colour with you first
- Approved under the ARBOMaster scheme
Take a look at our cost guide and our reviews.