Essex · England
Great Waltham Window Mastic
Our applicators work in Great Waltham on mastic around window and door frames, sills and patio doors. Old material cut out, joints cleaned and sealed neatly and a 12-month guarantee.
- Cold air getting in at the frame edge
- Untidy mastic left by window fitters
- Cracked sealant at the sill ends
About our window mastic in Great Waltham
A cold draught around a closed window often comes from the frame edge. Resealing that joint can make a room feel noticeably less draughty. Where the air is getting in through the window itself, we will say so. We work on patio & French doors, timber windows & doors and composite doors, and the jobs we see most are gaps where the sill meets the wall and hard, cracked sealant around windows.
Mastic can only go onto a dry, clean joint, so window work in Great Waltham is booked around the forecast. Tell us about access to every side of the house, including upper-floor windows.
Our work is backed for twelve months, in Great Waltham and everywhere else we cover.
- Place
- Great Waltham (CM3)
- Region
- Essex
- Guarantee
- A year, on every job
- Price
- A clear price before any work starts
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
Landlord and commercial work in Great Waltham
We also work for property managers and facilities teams in Great Waltham and across Essex. Several sites can go on one quote, and we’re fully insured for the work.
Whether it’s one flat or a portfolio, you get the same standard of work: the old material taken out, careful preparation and a 12-month guarantee.
Great Waltham homes and the weather
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.
For an older house near a landmark such as Church of SS Mary and Laurence, frames set in older brick or stone need a sealant that suits the wall as well as the frame. If you let a flat or house near Beaulieu Park station, renewing tired window mastic between tenants heads off draught and damp complaints.
Great Waltham is about 4 miles north of Chelmsford, in Essex. Every kind of property in Great Waltham can book us for window mastic. Every job comes with our 12-month guarantee. Great Waltham is one of 644 towns and villages in Essex we cover.
Jobs for window mastic in CM3 is quoted and booked the same way as anywhere else. Window mastic is available to properties on Brook Mead, Cherry Garden Road and Chelmsford Road. Close by, we work in Breeds (1 mile south-west), Minnow End (1 mile south-east), Little Waltham (1 mile south-east), Broomfield (2 miles south-east) and Chignall Smealy (2 miles south-west). Further out, we also cover Chelmsford (4 miles south), Basildon (15 miles south), Braintree (8 miles north-east), Harlow (15 miles west), Brentwood (13 miles south-west) and Maldon (11 miles south-east).
What’s near Great Waltham
In Great Waltham, that means homes and buildings near The Beehive pub and the streets around them. Great Waltham’s nearest station is Beaulieu Park station, roughly 3.7 miles south-east. Nearby you will also find Broomfield Hospital (1.4 miles south). For a walk, there’s Little Waltham Meadows.
How to look after the new joints
So the new joints stay in good condition:
- Don’t use solvent cleaners on the joint
- Don’t paint over the silicone
- Clean frames with a soft cloth and soapy water
- Air rooms to keep condensation down around windows
Timber frames need their paint kept up, because bare, wet timber moves more and pulls at the joint. Paint up to the joint, not over the silicone.
On timber windows, water behind the joint can lead to rot. Rotten timber needs a joiner, not a sealant, so it pays to reseal before that happens.
Why it’s worth doing now in Great Waltham
Once mastic fails, rain can get between the frame and the wall. Over time that can mean damp patches, damaged plaster and rotting timber. A reseal is a much smaller job. Around Great Waltham, older homes often have timber in their floors and frames, where water from a failed joint can cause rot if it’s left.
A few things move the cost up or down: how much old sealant there is and how stubborn it is, any mould to treat, and whether the work is at height. We take all of that into account in your quote.
What you get with us
- Colour agreed with you before work begins
- 180+ five-star Google reviews
- Sealant colour chosen to suit
- An ARBOMaster approved applicator
Read what affects the cost and customer reviews.
How the visit works
Before we leave, we go over the finished joints with you. The visit itself usually takes a morning for a couple of windows and a door, depending on how much there is to do. In a small place like Great Waltham, access is generally the main thing to plan. For outside work, also let us know about exposed walls and any outbuildings involved.
- First, we go round the frames with you and agree the list.
- We remove the old mastic and clean the frame edge and wall.
- Deep gaps get closed-cell backing rod to set the depth.
- The new sealant goes on in white, brown, anthracite grey, black or clear to suit.
- We tool each bead neatly and check every joint is closed.
Preparing for the visit
- Mention any sign-in or site rules at work premises
- Clear items away from the joints we are working on
- Keep children and pets away from the work area
How to get a quote
A good description makes for an accurate quote. Let us know the location, the problem and roughly how many joints, and email photos if that is easy.
Advice
Should I try it myself first?
Too much sealant is as bad as too little. A thick, smeared bead looks untidy and does not move well, and the joint depth matters as much as the finish.
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, then guaranteed for a year.
Great Waltham questions
Is Great Waltham within the area you cover?
Yes, Great Waltham is covered. Our work covers London and the South East, from towns to the smallest places. Longer journeys are simply planned in advance.
Do you cover Great Waltham for window mastic?
Yes. We work across London and the South East, and Great Waltham is part of that. Just phone 0345 464 0079 or drop us an email with a few details of the job, and we will give you a clear quote.
Is the work guaranteed?
Yes. Every job comes with our one-year guarantee, and we are fully insured.
I rent my home. Can I book you?
We can work for tenants, landlords or agents. Just make sure your landlord agrees.
Can new sealant go over the old?
No. The old sealant always comes out first, so the new joint bonds to clean surfaces.
What sealant do you use?
We choose the sealant for the joint, not the other way round. Where it moves, gets wet or faces the weather makes a difference, and we’ll explain our choice.
Do you do commercial work?
Yes. We work in offices, washrooms, hotels and other commercial premises, as well as homes. Working times can be discussed when we quote.
Do you remove the old sealant?
Yes, every time. New silicone does not stick to old silicone, so the joint is cleaned back first.
Nearby places to Great Waltham
What else we do in Great Waltham
Common problems we fix in Great Waltham
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. A sealant that can’t keep up eventually tears.
These are the problems we’re asked about most:
- Draughts coming in around windows and doors
- Leaking joints at the ends of sills
- Draughty joints inside around the window
- Gaps left after new windows were fitted
If you look after a building such as Chelmer Valley High School, its window and door frames need their mastic kept sound, just like a home’s.
Before you book anyone
- Whether you can choose the colour
- Whether the sealant suits the joint
- Whether all the old sealant comes out first
- How hidden problems are handled
What the job involves on each surface
uPVC windows
Fitters’ mastic on plastic frames is sometimes thin and rushed. It comes out, deep gaps get backing rod and the joint is resealed.
Patio & French doors
Water at the foot of a door frame isn’t always the mastic: worn seals, blocked drainage slots or a poor threshold detail can be the cause. We look for the cause first.