Essex · England
Sand mastic for sash & case windows in Navestock Common, Essex
Sand mastic in Navestock Common from a team with over 20 years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Gaps round a timber door in stone or brick
- Old cement repairs round a window that have failed
- Mastic dropping out of the joint
Sand mastic in Navestock Common
Old sand mastic cracks, crumbles and falls out over time and gaps open up round the frame. We rake it out and renew it so the surround looks right again. We’re often asked to deal with mastic dropping out of the joint and gaps where the frame meets the masonry, on brick reveals, period & listed homes and stone surrounds.
In a village or hamlet like Navestock Common, older cottages and farmhouses often have timber windows set in stone or brick. Older buildings like these do not always suit modern silicone, and sometimes a traditional sand mastic is the better choice.
You are covered for a year from the day we finish. If anything isn’t right with it, call 0345 464 0079 or send us an email.
- Place
- Navestock Common (CM14)
- Wider area
- Essex
- Cover
- A year, on every job
- Quote
- Quoted before any work starts
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
How the visit works
Our applicators work methodically: protect, prepare, seal, tidy. Typically it takes a few hours for a single window, longer for several, and the area is left clean. Somewhere as small as Navestock Common, access is often the only tricky part. For outside work, also let us know about exposed walls and any outbuildings involved.
- We look at the surrounds with you and agree the joints to renew.
- Old mastic and any loose material are raked out.
- Deep gaps are packed so the mastic sits at the right depth.
- The sand mastic is mixed and pressed into the joint by hand.
- We dress the finish so it sits neatly against the masonry.
Getting ready for the visit
- Tell us about any water getting in
- Let us know about stairs, lifts or work at height
- For business premises, tell us about site rules or sign-in
Ask for a quote
A good description makes for an accurate quote. Tell us where the job is, what’s wrong and how much there is, and add photos by email if you can.
Related advice
DIY versus a professional finish
The difference is mostly in the preparation and the 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.
If you do try it yourself, take your time over the preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it does not work out, we can still put it right.
Why act early in Navestock Common
Not every filler suits an old window surround. Sand mastic matches what was there, which can matter on listed and conservation-area homes. Older cottages and farmhouses around Navestock Common can have timber floors and frames, and water through a failed joint can rot timber if it’s left.
Leaving a failed joint normally makes the job bigger, not smaller, as water and mould keep getting in. If you’re unsure, phone 0345 464 0079 or drop us an email for an honest opinion and a quote.
Why us?
- One-year guarantee on every job
- ARBOMaster approved applicator
- Anti-fungal silicone where joints get wet
- 4.9 on Google from 180+ five-star reviews
Take a look at how sealant jobs are priced and customer reviews.
What we can’t put right
A few problems are outside what sealant work can do:
- Crumbling stone or brickwork round the window
- Whether work needs listed building consent
- Sashes that need overhauling
If in doubt, ring 0345 464 0079 or drop us an email and we’ll say what we think before booking.
What we seal
- Tenement windows
- Timber door frames
- Sash and case windows
- Stone surrounds
- Brick reveals
- Period & listed homes
Navestock Common homes and the weather
With historic houses such as Hare Hall (about 3.3 miles south) nearby, there’s older building stock in the area around Navestock Common as well as newer homes. In older buildings, older timber frames in brick or stone need a different approach from a modern uPVC window. Rainfall in the South East is lower than in much of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
Schools such as Drapers' Academy are buildings too, and its window and door frames need their mastic kept sound, just like a home’s. If you let a flat or house near Harold Wood station, cracked sand mastic around sash windows lets in the draughts tenants complain about.
Navestock Common is about 4 miles north of Romford, in Essex. Navestock Common gets the same service as everywhere we cover: old sealant removed completely, careful preparation and a 12-month guarantee. Across Essex, we cover 644 places, and Navestock Common is one of them. Our Chelmsford page covers work nearby.
Jobs for sand mastic in CM14 works the same way as everywhere else we cover. We also cover the places around Navestock Common: Waterhales (1 mile north-east), St Vincent's Hamlet (1 mile east), Noak Hill (1 mile south-east), Horseman Side (2 miles north-east) and Navestock Heath (2 miles north). Larger places within reach include Chelmsford (14 miles north-east), Basildon (12 miles east), Harlow (10 miles north-west), Brentwood (4 miles east), Billericay (9 miles east) and Loughton (6 miles west).
Near you in Navestock Common
In Navestock Common, that means homes and buildings near Dagnam Park, among other places. The nearest railway station is Harold Wood station, about 3 miles south. Other landmarks nearby include Romford Shopping Hall (3.8 miles south) and Harold Wood Hospital (2.9 miles south). Green spaces nearby include Bedfords Park.
Places near Navestock Common
Other services in Navestock Common
Navestock Common questions
Do you cover Navestock Common for sand mastic?
Yes. Our work covers London and the South East, and Navestock Common is part of that. You can phone 0345 464 0079 or send us an email and let us know what needs doing, and we will give you a clear quote.
Can you help a landlord with a rental near Harold Wood station?
Yes, landlords and agents are among the people we work for. Just phone 0345 464 0079 or drop us an email with the address and what needs doing, and we will send you a clear quote.
What should I tell you?
Tell us what needs doing and where, with photos by email if possible. We’ll ask anything else we need to know.
What exactly is sand mastic?
A traditional pointing material made from sand and a linseed-oil-based binder, used between timber frames and stone or brick.
Where is Mr Mastic based?
Our base is Crawley, with over 20 years’ experience. We work across South East England, London and Scotland.
Is it possible to paint over sand mastic?
It’s traditionally left unpainted, which is what traditional guidance recommends. Ask us before decorating.
Do the sealants smell?
It depends on the product. Some smell for a while, some hardly at all, and any smell fades as they cure.
Is it worth trying it myself?
Some simple jobs can be done by a careful DIYer. Most DIY failures come from sealing over old material, wet joints or too much sealant.
What affects the cost of sand mastic
We don’t publish a price list, because jobs vary so much. What we look at:
- The amount of work
- Which sealant suits the joint
- Whether old sealant or filler has to be cut out
- Mould in or behind the old joints
The cost reflects the work involved, not a rough estimate. That is why we ask a few questions first and give you a clear price before work begins.
Asking for a quote
Before you ask for a quote, have a think about:
- Whether it has been sealed before
- Photos by email, if that is easy
- How many joints, rooms or windows are involved
- Whether it’s a home or a business
There’s no standard price list. Instead, we give you a clear quote for your job. To arrange one, phone 0345 464 0079 or send us an email.
Aftercare tips
So the new joints stay in good condition:
- Ask us before painting near the mastic
- Sort the mastic before the decorators arrive
- Do not run silicone over sand mastic
- Find out about consent before window work on a listed home
Leave the new mastic alone while it firms up. It skins over quickly but needs longer to fully harden.
Good mastic helps keep the frame dry. Failed mastic lets water reach the timber and timber that stays wet can rot.
Common problems we fix in Navestock Common
Paint, silicone or cement used over old mastic causes problems. They do not move with the timber, and they usually need raking out.
The problems people normally mention when they call are:
- Weathered mastic on the most exposed windows
- Old sand mastic that has cracked, crumbled or fallen out
- Gaps where the frame meets the masonry
- Gaps round a timber door in stone or brick
Homes close to Church of St Thomas include some older properties, and frames set in older brick or stone need a sealant that suits the wall as well as the frame.
Comparing quotes
- What insurance they hold
- Who does the work, and how experienced they are
- Whether you can choose the colour
- Whether VAT is included