Essex · England
Brentwood Window Mastic
Window and door frames in Brentwood need attention? We remove the old material, prepare the joints and seal them properly.
- Old mastic that has gone black or come away
- Hard, cracked sealant around windows
- Gaps left after new windows were fitted
Window mastic in Brentwood, done properly
A cold draught around a closed window often comes from the frame edge. Resealing that joint can make a room feel noticeably less draughty and quietens the whistle on windy days. Where the air is getting in through the window itself, we’ll say so. If you’re dealing with damp patches on the reveal after heavy rain and cracked sealant at the sill ends, we can help, on composite doors, uPVC windows and timber windows & doors alike.
Walls in Brentwood that face the prevailing wind take the most weather, so the mastic there tends to fail first. It’s worth looking at every frame, not just the one that leaks.
We guarantee the work for a year. If there’s a problem with our work within the year, let us know and we will sort it.
What happens on the day
Most of a good job is in the preparation, so that is where we spend the time. Every joint is cleaned and dried before new material goes in. In total, it usually takes a few hours for a handful of frames, longer for a whole house. A visit in Brentwood needs access to the work and a place to park close by. For outside work, let us know about side access, gates and any upper-floor joints.
- First, we confirm safe access to each frame.
- Old, cracked mastic is removed completely.
- The surfaces are cleaned and left dry.
- Backing rod fills deep voids and the sealant goes in on top.
- We tool the joint so water runs off, then clear up.
Getting ready for the visit
- Let us know if you’ve seen damp or leaks
- Tell us if parking is tricky
- Move anything stored near the joints
Getting a quote
Asking for a quote is easy: let us know what needs doing and where and its rough size. Photos by email help us understand the job.
Read more
How to look after the new joints
No joint lasts for ever, but care makes a real difference. Our tips:
- Clear any debris from frame drain holes
- Avoid blasting the frames with a pressure washer
- Look round the frames every year or so
- Do not paint over the silicone
Keep the new mastic undisturbed while it cures, for as long as we advise. Keep jet washers away from the frames.
On timber windows, water behind the joint can lead to rot. Rotten timber needs a joiner, not a sealant, so early resealing is worth it.
Nearby places to Brentwood
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What affects the cost of window mastic
We don’t publish a price list, because jobs vary so much. The quote depends on:
- The old material and how stubborn it is
- The product the joint needs
- The size of the job
- Access and height
The cost depends on the size of the job, how much old material has to come out and access to the work. We give a clear quote before any work starts, so you know where you stand.
What we need to know
Photos by email are helpful but not essential. Try to tell us:
- Roughly how big the job is
- How we’d reach the joints
- If someone has resealed it before
- Where the property is
Call for a quick quote, or email us if that is easier. Tell us about the joints that need doing and we’ll talk you through the work and give you a clear quote.
FAQs for Brentwood
Do you cover Brentwood for window mastic?
Yes. Our work covers London and the South East, and Brentwood is part of that. Just phone 0345 464 0079 or drop us an email with a few details of the job.
Can you help a landlord with a rental near Brentwood station?
Yes. We work for letting agents and landlords as well as householders, and several properties can go on one quote. You can phone 0345 464 0079 or email us with the details for a clear quote.
How long should I leave it?
Cure times vary by product and the temperature. Before we leave, we will tell you the cure time.
Will you leave a mess?
Not at all. We work neatly, protect the area around the joints and tidy up afterwards.
What does window mastic cost?
Every job is different, so each one gets its own quote. For a quick quote, ring 0345 464 0079 or drop us an email and tell us what needs doing and where.
Does the work come with a guarantee?
Yes. Our one-year guarantee covers every job, inside or out.
What do you need from me for a quote?
A short description and the location, plus photos if you have them. We’ll ask anything else we need to know.
How long will my window job take?
It depends on access, the old mastic and the size of the frames. We’ll tell you how long your job needs when we quote.
Should I try it myself first?
Sealing over old silicone is the commonest DIY error. Silicone does not stick to old silicone, so it lifts and traps water and mould underneath. All the old material has to come out first.
Some jobs are best left to a professional: work at height, external movement joints, fire-rated sealant and large areas call for the right materials, safe access and experience.
How the job changes by surface
Aluminium frames
Large aluminium doors have long joints down each side and across the head, and the bottom joint sees the most water. Each is cleaned, backed where deep and resealed.
Timber windows & doors
Wood swells when it’s wet and shrinks when it dries, so a flexible sealant is essential. We seal onto sound, dry paintwork or timber.
Window mastic in Brentwood: local notes
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. Historic houses like Ingatestone Hall (about 4.4 miles north-east) are a reminder that the area around Brentwood has older buildings as well as new. In older buildings, 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 Brentwood station, sound mastic around windows and doors keeps out the draughts and damp that tenants notice first. Managing a site like Becket Keys Church of England School? Then larger buildings have plenty of frames, and the mastic around each one ages.
Brentwood is about 19 miles north-east of London, in Essex. Brentwood gets the same service as everywhere we cover: old sealant removed completely, careful preparation and a one-year guarantee. Our Essex coverage runs to 644 places, Brentwood among them. Chelmsford is on our list too, around 11 miles away.
Here we cover the CM13, CM14, CM15 and CM4 postcode area for window mastic. If you need window mastic at a property on High Street, London Road and Old Church Road or a nearby road, we can help. Brentwood is on the A12 and A128, so it’s easy for us to get to with everything needed for window mastic. If you are just outside Brentwood, we cover Shenfield (1 mile north-east), Hutton Mount (1 mile east), Ingrave (2 miles south-east), Hutton (2 miles east) and Doddinghurst (3 miles north). Further out, we also cover Chelmsford (11 miles north-east), Basildon (8 miles south-east), Harlow (13 miles north-west), Canvey Island (14 miles south-east), Billericay (5 miles east) and Rayleigh (13 miles east). Brentwood is among the bigger towns we cover in Essex.
Around Brentwood
We work in homes and buildings around Sawyers Hall College, Weald Country Park and St Helen's Catholic Junior School and the streets around them. Brentwood’s nearest station is Brentwood station, about 0.9 miles south of the centre. Nearby you will also find Brentwood Community Hospital (0.5 miles east). The countryside around Brentwood includes Thorndon Park.
What we can’t put right
In fairness, there are a few things sealant won’t fix:
- Worn gaskets, brush seals or a door that has dropped
- Faulty window hardware
- Damp coming through the wall itself rather than the frame joint
If in doubt, ring 0345 464 0079 or send us an email and we will say what we think.
Surfaces we seal
- Aluminium frames
- Timber windows & doors
- Window sills
- uPVC windows
- Composite doors
- Patio & French doors
Common problems we fix in Brentwood
Every frame moves through the day. Sun on a frame makes it expand, and it contracts again overnight, while the masonry beside it stays put. A sealant that can’t keep up eventually tears.
Any of these means the joints need attention:
- White mastic on grey or black frames
- Cracked sealant at the sill ends
- Draughts coming in around windows and doors
- Water coming in at the bottom corners of a door
Homes close to Church of St Thomas of Canterbury include some older properties, and replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint.
What to look for in a quote
- What product goes in the joint
- Which colour the sealant will be
- What happens if the job turns out different
- Whether VAT is included