Essex · England
Sand Mastic in Chelmsford
Our applicators work in Chelmsford on traditional burnt sand mastic around sash and case windows and doors in stone and brick. Old sealant removed completely, joints prepared properly and every job guaranteed for a year.
- Draughts and rain around sash boxes
- Old sand mastic that has cracked, crumbled or fallen out
- Cement or filler used on old window joints that has cracked
Sand mastic in Chelmsford, done properly
Traditional burnt sand mastic that sits naturally against stone and brick. It’s a good fit for period properties where a modern sealant bead would stand out. If you have silicone on a period window that looks wrong and mastic worn away on windows facing the weather, we can help.
Beyond its homes, Chelmsford has shopfronts, offices and flats with plenty of frames and glazing. A cracked joint on an upper floor can let water in long before anyone spots it.
We guarantee the work for a year. If something isn’t right with it in that time, tell us and we will put it right.
Aftercare tips
No joint lasts for ever, but care makes a real difference. Our tips:
- Clear gutters so water doesn’t pour onto the windows
- Avoid heavy scraping on the mastic joint
- Ask a joiner to look at soft timber first
- Plan mastic work ahead of painting
Leave the new mastic unpainted, as traditional guidance advises. Ask us before any decorating around it.
Good mastic helps keep the frame dry. Failed mastic lets water reach the timber, which can lead to rot.
FAQs for Chelmsford
What guarantee comes with sand mastic in Chelmsford?
All our work, in Chelmsford and everywhere else, comes with a 12-month guarantee. We are also fully insured and ARBOMaster approved.
Do you cover Chelmsford for sand mastic?
Yes. We work across London and the South East, and Chelmsford is part of that. You can call 0345 464 0079 or drop us an email and let us know what needs doing.
What do you put in the joint?
It depends on the joint: anti-fungal sanitary silicone in wet areas, and other sealants where joints move or face the weather. Brands we use include Arbo and Everbuild.
Should I check with the council before work on a listed or conservation-area home?
Check with your local planning authority. They decide whether consent is needed for work to your windows.
Can you quote for more than one area?
Yes. Tell us about everything you’d like done and you will get one quote.
How long does sand mastic take to harden?
It forms a skin fairly soon, then hardens over a longer period. The weather and joint depth both affect it.
How do I get a quote for sand mastic in Chelmsford?
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 let us know what needs doing and where.
Do I have to be there?
That depends on where the joints are. Inside work needs someone to give us access.
What we’re called out for in Chelmsford
Most of it is simply age. Even well-laid mastic needs renewing in time, depending on exposure and upkeep.
Most people get in touch after spotting one of these:
- Weathered mastic on the most exposed windows
- Mastic round period door frames that has failed
- Cement or filler used on old window joints that has cracked
- Modern sealant on a period surround
For landlords with property near Chelmsford station, older sash windows in a rental need their mastic kept sound to keep the weather out.
Before booking anyone
- Is the old sealant removed completely?
- Is VAT in the price?
- How the surfaces are prepared before sealing
- What insurance they hold
Chelmsford homes and the weather
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. 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.
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. Managing a site like Trinity Road Primary School? Then the mastic around its windows and doors needs looking after like any other building’s.
Chelmsford is about 30 miles north-east of London, in Essex. Chelmsford gets the same service as everywhere we cover: the old material taken out, joints prepared properly and a 12-month guarantee. 644 places in Essex are on our list, from the larger towns to small villages.
Jobs for sand mastic in CM1, CM2, CM3 and CM4 is quoted and booked the same way as anywhere else. If you need sand mastic at a property on Backnang Square, High Street and Barrack Square or anywhere close by, we can help. Being close to the A12 and A130, Chelmsford is simple for us to get to. Close by, we work in Moulsham (1 mile south-west), Patching (1 mile north-west), Widford (2 miles south-west), Broomfield (2 miles north) and Writtle (3 miles west). Within a short drive, we also cover 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). Chelmsford is among the bigger towns we cover in Essex.
Near you in Chelmsford
Around Chelmsford, our work takes us to homes and buildings near Our Lady Immaculate Church, The Boswells School and Chelmsford College, among other places. Other local landmarks include Chelmer Valley Riverside (0.5 miles north-west) and The Two Brewers Public House (under half a mile south-west). The closest station to Chelmsford is Chelmsford station, about 0.7 miles west of the centre. Other landmarks nearby include Priory Hospital (less than half a mile north) and Peter Edwards Museum And Library (0.8 miles south-west). Open spaces near Chelmsford include Newland Grove.
Also near Chelmsford
Also in Chelmsford
For landlords and businesses
Landlords and letting agents in Chelmsford can book us as well as householders. Resealing between tenancies is a simple way to keep a property in good order before the next move-in.
Mouldy or split sealant often shows up at the end of a tenancy. We can quote for more than one property at once.
How it works
Good joint work is mostly preparation, so that is where we spend the time. Every joint is cleaned and dried before new material goes in. All told, the work takes anything from a few hours to a full day, depending on how many windows. Commercial jobs in Chelmsford can be planned out of hours where a building can’t close, while home visits are arranged within our normal working hours, Monday to Saturday.
- We check each window surround and the condition of the joint.
- The joint is raked out and cleaned.
- We fill deep gaps so the new mastic is not too thick.
- We point the joint with sand mastic by hand.
- We finish the mastic to a tidy line.
How to prepare
- On commercial sites, let us know about site rules
- Mention any parking rules near the property
- Clear the area around the work
Get a quote
For sand mastic in Chelmsford, call 0345 464 0079 or drop us an email. Tell us what the problem is and where, and you will get a clear quote before we start.
Read more
When it is not the sealant
New sealant can’t fix everything, and we will tell you before any work starts. Sealant will not put right:
- Decisions on consent for listed homes
- Putty and glazing repairs
- Sash cords, weights and draught-proofing of the sashes
Not sure which it is? You can call 0345 464 0079 or email us and we’ll tell you honestly.
Surfaces we seal
- Stone surrounds
- Timber door frames
- Period & listed homes
- Tenement windows
- Brick reveals
- Sash and case windows
What affects the quote in Chelmsford
You’ll get a clear quote before we start. It takes into account:
- The old material and how stubborn it is
- When we can work, for business premises
- How many areas need sealing
- Whether the work is at height
The cost depends on the size of the job, how hard the old material is to remove and access to the work. You’ll have a clear quote before any work starts.
What to tell us for a quote
To help us quote quickly, please include:
- Where the property is
- What the problem is, such as mould, gaps, leaks or cracking
- Photos by email, if that’s easy
- Any previous sealing or DIY work
We don’t publish a price list, as no two jobs are quite the same. Instead, we give you a clear quote for your job. To arrange one, call 0345 464 0079 or email us.
Can I do it myself?
Not every job suits DIY: high-level joints, fire-rated gaps, external movement joints and big jobs call for the right materials, safe access and experience.
Too much sealant is as bad as too little. A heavy bead looks messy and copes badly with movement, and the joint depth matters as much as the finish.