Essex · England
Sand mastic for sash & case windows in Woodham Mortimer, Essex
Sand mastic for Woodham Mortimer, by sealant specialists with 20+ years’ experience. Rated 4.9 on Google from 180+ five-star reviews.
- Window mastic to renew ahead of painting
- Cement or filler used on old window joints that has cracked
- Gaps where the frame meets the masonry
How we handle sand mastic in Woodham Mortimer
Across Woodham Mortimer, we renew sand mastic around sash and case windows. Each joint is raked out, prepared and pointed by hand, finished to suit the masonry. We work on sash and case windows, timber door frames and brick reveals, and common reasons people get in touch are mastic dropping out of the joint and modern sealant on a period surround.
Somewhere as small as Woodham Mortimer, older homes often have timber frames set in stone or brickwork. Older buildings like these don’t always suit modern silicone, and sometimes a traditional sand mastic is the better choice.
Whatever the size of the job, you get the same one-year guarantee.
- Location
- Woodham Mortimer (CM9)
- Region
- Essex
- Guarantee
- A year, on every job
- Quote
- Quoted before any work starts
- Call
- 0345 464 0079
- Updated
- 26 October 2026
Woodham Mortimer: your questions answered
Can you help a landlord with a rental near South Woodham Ferrers station?
Yes. We work for letting agents and landlords as well as householders. Just call 0345 464 0079 or drop us an email with the address and what needs doing, and we’ll send you a clear quote.
Do you cover smaller places like Woodham Mortimer?
Yes, smaller places are covered as well as towns. We work across London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
What guarantee comes with the work?
There’s a 12-month guarantee on every job, sand mastic included.
What sealant do you use?
It depends on the joint: anti-fungal sanitary silicone in wet areas, and other sealants where joints move or face the weather. We use products from Arbo and Everbuild.
Will there be a smell?
There can be a smell while the sealant cures. Opening a window helps.
Is it OK to seal over old sealant?
No, it won’t last. It can look neat for a few weeks, but the new layer lifts away from the old one. The old sealant has to come out completely.
How long does sand mastic take?
That depends on how much there is to do, but most jobs take a few hours for a single window, longer for several. We’ll give you a better idea when we quote.
Where do you work from?
We’re a Crawley-based firm. We work across South East England, London and Scotland.
Can I do it myself?
What a professional job adds is preparation and the right product. Joints are cleaned back to sound surfaces and dried, and the sealant is chosen for how the joint moves and where it is, and the work is guaranteed for a year.
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.
Also near Woodham Mortimer
More services for Woodham Mortimer
When it isn’t the sealant
It helps to know what we can’t do:
- Decayed frames that need repair
- Decisions on consent for listed homes
- Masonry that needs repairing
If you’re not sure, just ring 0345 464 0079 or email us and we will give you a straight answer before booking.
Where we work in Woodham Mortimer
- Period & listed homes
- Tenement windows
- Sash and case windows
- Timber door frames
- Brick reveals
- Stone surrounds
Leave it or put it right?
Replacing sash windows is a big decision for a period home, and in listed buildings it may need consent. If the frames are sound, renewing the mastic deals with gaps and draughts at the surround. In a small place like Woodham Mortimer, homes can be exposed to wind and rain, which finds any gap, and older walls, once damp, take a long time to dry.
Homes and businesses are quoted the same way: the amount of work, the access and the products needed, plus any working-time requirements on site. Ask us for a quote and we’ll explain what it covers.
Why book with us
- Full insurance on every job
- Anti-fungal sanitary silicone in wet areas
- Approved under the ARBOMaster scheme
- Every job guaranteed for a year
What we do, step by step
The work is kept neat and contained to the joints we are treating, so you can get on with your day. The job usually takes a few hours per window, depending on the condition of the joints, and we tell you how long to leave it before we go. In a small place like Woodham Mortimer, access is generally the main thing to plan. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- First we agree which joints need doing.
- We remove the old, loose mastic.
- We pack any deep voids first.
- We apply the mastic by hand and shape it.
- The surface is finished to suit the stone or brick.
Getting ready for the visit
- On commercial sites, let us know about site rules
- Let us know about stairs, lifts or work at height
- Move anything stored near the joints
Getting a quote
To get a quote, phone 0345 464 0079 or email us and tell us where the job is and what the problem looks like. We’ll send you a clear quote before any work starts.
Related advice
For landlords and businesses
We regularly work with letting and managing agents. Tell us the address, the job and how access works and we’ll give you a quote.
From a single let to a portfolio, you get the same standard of work: the old material taken out, careful preparation and a 12-month guarantee.
How to look after the new joints
So the new joints stay in good condition:
- Keep sills and gutters clear so water drains away
- Have rotten timber repaired before new mastic goes in
- Renew mastic before redecorating the windows
- Do not run silicone over sand mastic
Avoid sealing over the mastic with silicone. If anything cracks, get it looked at rather than patching it.
It’s best to renew mastic before painting the windows. Paint over cracked mastic only covers it up.
What the job involves on each surface
Stone surrounds
Stone surrounds suit sand mastic well. The finish blends with the masonry.
Timber door frames
Period doors in stone or brick openings are often pointed with sand mastic. The method is the same as for windows.
Woodham Mortimer homes and the weather
Historic houses like Danbury Place (about 2.7 miles west) are a reminder that the area around Woodham Mortimer 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. London and the South East are among the drier parts of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
If you let a flat or house near South Woodham Ferrers station, older sash windows in a rental need their mastic kept sound to keep the weather out. Homes close to Church of St Margaret include some older properties, and replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint.
Woodham Mortimer is about 3 miles west of Maldon, in Essex. Anywhere in CM9, we cover sand mastic for homes and businesses. Woodham Mortimer is one of 644 towns and villages in Essex where we work. You can also see our page for Chelmsford, roughly 6 miles from Woodham Mortimer.
We cover every part of CM9 for sand mastic. Streets in the area include Maldon Road, Conduit Lane and Bryant's Lane, and we cover them all. Nearby, we also carry out sand mastic in Hazeleigh (1 mile south-east), Woodham Walter (1 mile north), Curling Tye Green (2 miles north-east), Ulting (3 miles north) and Maldon (3 miles east). Further out, we also cover Chelmsford (6 miles west), Basildon (12 miles south-west), Braintree (12 miles north), Brentwood (15 miles south-west), Canvey Island (13 miles south) and Billericay (10 miles south-west).
Near you in Woodham Mortimer
Typical jobs here are in homes near The Hurdlemarker's Arms and the streets around them. Woodham Mortimer’s nearest station is South Woodham Ferrers station, roughly 4.3 miles south. A little further out are Baddow Hospital (4.9 miles west). For a walk, there’s Danbury Ridge Nature Reserves.