Essex · England
Window Mastic in Chelmsford
Professional window mastic in and around Chelmsford, with old sealant always removed completely and a 12-month guarantee.
- Old mastic that has gone black or come away
- Gaps between the frame and the inside reveal
- A bead that does not match the frame
For landlords and businesses
We regularly work with letting and managing agents. Send the address, what’s needed and the access arrangements and we will quote.
We work for landlords and agents as well as householders. Resealing between tenancies keeps a property looking cared for before the next move-in.
Window mastic in Chelmsford
Frames and walls don’t move together. Plastic and aluminium frames move with the temperature, while masonry stays fairly still. So the sealant has to stretch and recover, which is why we use a low-modulus product. Common call-outs are for draughts coming in around windows and doors and old mastic that has gone black or come away, on timber windows & doors, uPVC windows and composite doors.
Town-centre flats, shops and offices in Chelmsford have long runs of frames and glazing. Failed joints up there let in water that can go unnoticed for a while.
The work is guaranteed for twelve months. If something isn’t right with it in that time, tell us and we will put it right.
How it works
On the day, there’s very little for you to do. Show us the job and we’ll take it from there. The work itself takes a morning for a couple of windows and a door. In central Chelmsford, parking can be tight, so tell us about driveways, permits or nearby car parks. For flats, mention stairs, lifts and shared entrances as well.
- Each frame is looked over and we agree which ones need resealing.
- We remove the old mastic and clean the frame edge and wall.
- Deep gaps get closed-cell backing rod to set the depth.
- A flexible exterior sealant is applied in a colour to suit the frame.
- We tool each bead neatly and check every joint is closed.
Before we arrive
- On commercial sites, let us know about site rules
- Let us know if you’ve seen damp or leaks
- Clear items away from the joints we are working on
How to get a quote
We do not publish a price list. Instead, your job gets its own clear quote. To get started, phone 0345 464 0079 or send us an email.
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Different surfaces, different methods
Patio & French doors
Not every patio door leak is a mastic problem: worn seals, blocked drainage slots or a poor threshold detail can be the cause. We check before we reseal.
Timber windows & doors
Wood swells when it’s wet and shrinks when it dries, so a flexible sealant is essential. The paint or stain needs to be sound where the sealant meets it.
What affects the quote in Chelmsford
Your quote is based on your job. We look at:
- Whether the work is at height
- Which sealant suits the joint
- Mould in or behind the old joints
- When we can work, for business premises
What it costs depends on the size of the job, how much old material has to come out and how easy the joints are to reach. We give a clear quote before work begins.
What we need to know
Photos help, but a description is a good start. Please mention:
- What the problem is, such as mould, gaps, leaks or cracking
- Whether it has been sealed before
- The rough size of the job
- Photos by email, if that’s easy
Want a quote for window mastic? Please phone 0345 464 0079 or drop us an email with a few details. We will explain what we’d do and give you a clear price before work begins.
What sealant work cannot fix
Sealant is not the answer to every problem, and we’d rather say so up front. It will not solve:
- Faulty window hardware
- Damp coming through the wall itself rather than the frame joint
- Worn gaskets, brush seals or a door that has dropped
If in doubt, call 0345 464 0079 or email us and we will say what we think.
Where we work in Chelmsford
- uPVC windows
- Aluminium frames
- Timber windows & doors
- Window sills
- Patio & French doors
- Composite doors
DIY versus a professional finish
Sealing over old silicone is the commonest DIY error. New silicone won’t bond to old, so it peels away and traps moisture behind it. Everything old must be removed first.
The difference is mostly in the preparation and the product. We take joints back to clean, dry surfaces, and the sealant is chosen for how the joint moves and where it is, then guaranteed for a year.
Why it’s worth doing now in Chelmsford
The work is quick compared with the damage it prevents: the visit takes a morning for a couple of windows and a door. Leave it until water is coming in and you may need plastering and decorating as well. Busy buildings in Chelmsford, from hotels to offices, cannot afford rooms out of use for leaks or mould, so failing joints are best replaced on a planned basis.
The cost reflects the work involved, not guesswork. That is why we ask a few questions first and give you a clear price before we start.
Why us?
- More than 20 years in sealant work
- Experience in homes, commercial sites and hotels
- White, clear, grey or coloured to suit, where the product allows
- Quality sealants from Arbo and Everbuild
Read our cost guide or customer reviews.
What window mastic looks like in Chelmsford
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. With historic houses such as Hylands (about 2.8 miles south-west) nearby, there’s older building stock in the area around Chelmsford as well as newer homes. In older buildings, older timber frames in brick or stone need a different approach from a modern uPVC window.
In the older streets around Church of the Holy Trinity, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall. Rented homes near Chelmsford station change hands often, and renewing tired window mastic between tenants heads off draught and damp complaints. If you look after a building such as Trinity Road Primary School, larger buildings have plenty of frames, and the mastic around each one ages.
Chelmsford is about 30 miles north-east of London, in Essex. Chelmsford gets the same service as everywhere we cover: old sealant removed completely, careful preparation and a 12-month guarantee. Chelmsford is one of 644 towns and villages in Essex where we work.
Our applicators cover all of CM1, CM2, CM3 and CM4 for window mastic. That includes homes and businesses on Backnang Square, High Street and Barrack Square. Being close to the A12 and A130, Chelmsford is simple for us to get to. Other places close to Chelmsford include Moulsham (1 mile south-west), Patching (1 mile north-west), Widford (2 miles south-west), Broomfield (2 miles north) and Writtle (3 miles west). Larger places within reach include Basildon (11 miles south), Braintree (11 miles north), Brentwood (11 miles south-west), Maldon (8 miles east), Canvey Island (15 miles south) and Billericay (8 miles south). Being one of Essex’s larger places, Chelmsford has every kind of property, from flats to offices.
Local landmarks in Chelmsford
Locally, jobs take us to homes and businesses close to Our Lady Immaculate Church, The Boswells School and Chelmsford College. Other local landmarks include Chelmer Valley Riverside (0.5 miles north-west) and The Two Brewers Public House (within half a mile south-west). For rail, the closest station is Chelmsford station, about 0.7 miles west of the centre. A little further out are Priory Hospital (within half a mile north) and Peter Edwards Museum And Library (0.8 miles south-west). The countryside around Chelmsford includes Newland Grove.
Chelmsford: your questions answered
I let a flat near Chelmsford station. Can you help?
Yes, rental work is part of what we do. Just ring 0345 464 0079 or drop us an email and tell us about the property, and we’ll give you a clear quote.
Do you cover Chelmsford for window mastic?
Yes. Our work covers London and the South East, and Chelmsford is part of that. You can ring 0345 464 0079 or drop us an email and tell us what needs doing.
Is the work guaranteed?
Yes, with our 12-month guarantee. A yearly look at the joints helps them last.
Can I do it myself?
That depends on the joint. High-level, external movement and fire-rated joints are professional jobs, while a short indoor joint may be within reach.
Do you remove the old sealant?
Yes, every time. New silicone does not stick to old silicone, so the joint is cleaned back first.
When is the sealant fully cured?
That depends on the sealant used, so please follow the time we give you when we finish.
Can you seal the gap between the frame and the plaster indoors?
Yes. Draughts often come through the inside gap too, so it can be worth sealing both.
Will there be a smell?
Possibly a little. Any smell clears as the sealant cures, and ventilation helps.