Hampshire · England
Window Mastic in Well
Mastic around window and door frames, sills and patio doors for householders, landlords and businesses in Well. Fully insured, ARBOMaster approved and guaranteed for a year.
- Gaps left after new windows were fitted
- Gaps where the sill meets the wall
- Whistling draughts around closed windows
Window mastic for homes and businesses in Well
A cold draught around a closed window often comes from the frame edge. A new joint stops the air getting through. Where the air is getting in through the window itself, we will say so. Typical jobs include water coming in at the bottom corners of a door and whistling draughts around closed windows, on composite doors, aluminium frames and uPVC windows.
Homes in small places like Well 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.
Whatever the size of the job, it’s backed by our one-year guarantee.
- Location
- Well (RG29)
- Wider area
- Hampshire
- Guarantee
- 12 months on all our work
- Quote
- A clear quote up front
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
Can I do it myself?
A DIY attempt does not rule out a professional job. We cut it out and start again, so just mention it when you contact us.
Some jobs are best left to a professional: high-level joints, fire-rated gaps, external movement joints and big jobs need the right product, the right access and the right method.
Why it’s worth doing now in Well
Once mastic fails, rain can get between the frame and the wall. Left long enough, it can stain inside walls, spoil plaster and rot wooden frames. A reseal is a much smaller job. In a small place like Well, homes can be exposed to wind and rain, which finds any gap, and damp in older walls is slow to dry out.
What you pay reflects the work, not a rough estimate. That’s why we ask about the job first and give you a clear price before any work starts.
Why choose Mr Mastic in Well
- Neat joints and a tidy finish
- 12-month guarantee on every job
- A choice of colours where the product allows
- We agree the colour with you first
Read what affects the cost or our reviews.
Honest limits
We’d rather tell you now than do work that won’t last, so here’s what sealant can’t put right:
- Rotten timber, which needs a joiner first
- A door that needs adjusting, rehanging or new seals
- Damp problems in the wall away from the window
If you are not sure, just ring 0345 464 0079 or drop us an email and we’ll give you a straight answer.
Surfaces we seal
- Window sills
- Timber windows & doors
- Aluminium frames
- Composite doors
- Patio & French doors
- uPVC windows
Work for landlords, hotels and businesses
Whether it’s one flat or a portfolio, you get the same standard of work: old sealant fully removed, joints prepared properly and a one-year guarantee.
Letting agents often deal with us directly. Send the address, what’s needed and the access arrangements and we will give you a quote.
Do you need window mastic in Well?
Frames are never completely still. A plastic or aluminium frame lengthens in sunshine and shortens as it cools, while the masonry beside it stays put. If the sealant cannot stretch, it splits.
If you can see any of these, it’s time to have the joints looked at:
- Rushed sealant from a window installation
- Whistling draughts around closed windows
- Mastic that is falling out in pieces
- Cracked sealant at the sill ends
For landlords with property near Bentley (Hampshire) station, sound mastic around windows and doors keeps out the draughts and damp that tenants notice first.
What to look for in a quote
- Whether the sealant suits the joint
- What preparation is included
- What insurance they hold
- When the joint can take water or movement
Frames and glazing around Well
The South East is one of the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast. Historic houses like Farnham Castle (about 4.8 miles east) are a reminder that the area around Well has older buildings as well as new. 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.
Homes close to Lord Wandsworth College Chapel include some older properties, and frames set in older brick or stone need a sealant that suits the wall as well as the frame. If you look after a building such as Lord Wandsworth College, the mastic around its windows and doors needs looking after like any other building’s.
Well is about 5 miles west of Farnham, in Hampshire. For window mastic in and around Well, it’s easy to get a quote: please call 0345 464 0079 or email us. We are based in Crawley and cover Hampshire, Well included. We cover 683 towns and villages across Hampshire, large and small. We also work in Reading, around 16 miles away.
Every address in RG29 is covered for window mastic. Nearby, we also carry out window mastic in Long Sutton (1 mile west), South Warnborough (2 miles west), Odiham (3 miles north), Broad Oak (3 miles north) and North Warnborough (4 miles north-west). Further out, we also cover Basingstoke (9 miles north-west), Farnborough (8 miles north-east), Fleet (5 miles north-east), Aldershot (7 miles east), Alton (5 miles south-west) and Petersfield (14 miles south).
Landmarks near Well
The closest station to Well is Bentley (Hampshire) station, about 2.9 miles south-east. A little further out are Fleet Community Hospital (5.8 miles north-east) and Barley Pound (2.2 miles east). For a walk, there’s Holybourne Hill and Dogmersfield Lake.
Questions from Well
Do you cover Well for window mastic?
Yes, Well is within the area we cover. We work across London and the South East. You can phone 0345 464 0079 or send us an email and let us know what needs doing.
Is Well within the area you cover?
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 do commercial work?
Yes. Commercial and hotel work is a large part of what we do, as well as homes. Working times can be discussed when we quote.
Can new window sealant be painted?
Silicone generally won’t take paint. Let us know beforehand, and we’ll use a paintable product where it suits.
What does window mastic cost?
We do not publish prices, because the cost depends on the job: how much there is, what’s there now, how we reach it and what it needs. You will get a clear quote before we start.
Can I add another job to the visit?
Yes. Several rooms, windows or areas can go on one quote.
Do you have insurance?
Yes. Full insurance covers our work, and we can confirm the details when we quote.
Are you an approved applicator?
Yes. We are ARBOMaster approved, the scheme for applicators of Arbo sealants.
What we do, step by step
When we get to you, we compare the joints with what we discussed. If anything is different, we explain it before carrying on. After that, the work takes a few hours for a handful of frames, longer for a whole house. Somewhere like Well needs a little journey planning: tell us about narrow lanes, gates, long drives and where we can park. We bring what the job needs, so it can be finished in one trip where possible.
- Each frame is looked over and we agree which ones need resealing.
- We remove the old mastic and clean the frame edge and wall.
- Where the gap is deep, backing rod goes in first.
- A flexible exterior sealant is applied in a colour to suit the frame.
- Every joint is tooled smooth and checked before we leave.
How to prepare
- Tell us about access, such as stairs, a lift or high-level joints
- Tell us about any water getting in
- Keep pets and children clear of the area while we work
How to get a quote
Every job is quoted individually, so the first step is telling us about yours. Simply call 0345 464 0079 or email us and describe the job, and photos are welcome.
Advice
Surface by surface
Composite doors
An exposed front door gets wind-driven rain. Those corners get the most care.
Aluminium frames
Coated aluminium needs a compatible sealant. We use a neutral-cure product.