Essex · England
Navestock Common Window Mastic
We cover Navestock Common for mastic around window and door frames, sills and patio doors. Old material cut out, joints cleaned and sealed neatly.
- White mastic on grey or black frames
- Cracked internal joints between frame and plaster
- Leaking joints at the ends of sills
How we handle window mastic in Navestock Common
Most frames have an outside joint and an inside one. The external joint is the weather seal; inside, the joint between frame and plaster stops draughts and tidies the reveal. Either or both can be done. Typical jobs include gaps left after new windows were fitted and black, perished sealant on frames, on window sills, timber windows & doors and uPVC windows.
Somewhere as small as Navestock Common, older homes often have timber frames set in stone or brickwork. Older buildings like these do not always suit modern silicone, and sometimes a traditional sand mastic is the better choice.
A one-year guarantee comes with the work, just as it does everywhere we cover.
- Place
- Navestock Common (CM14)
- Wider area
- Essex
- Cover
- A year, on every job
- Quotes
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
What we’re called out for in Navestock Common
Frames are never completely still. Sun on a frame makes it expand, and it contracts again overnight, while the brick or render around it hardly moves. If the sealant cannot stretch, it splits.
Signs it’s time to call us include:
- Gaps where the sill meets the wall
- Cracked internal joints between frame and plaster
- Gaps left after new windows were fitted
- Cracked or shrunken mastic around the frame
If you look after a building such as Drapers' Academy, the mastic around its windows and doors needs looking after like any other building’s.
Comparing quotes
- How the colour is chosen
- Is VAT in the price?
- Whether they seal over old material or remove it
- What happens if the job turns out different
Work for landlords, hotels and businesses
Landlords and letting agents in Navestock Common can book us as well as householders. Sealant work between tenants keeps a property looking cared for before the next move-in.
Letting agents often deal with us directly. Tell us the address, the job and how access works.
What affects the cost of window mastic
The price is agreed before any work begins. It takes into account:
- Whether there’s mould to deal with
- How many rooms, windows or areas are involved
- Which sealant suits the joint
- Whether the work is at height
Some things make a job bigger or smaller: the old material and how easily it comes out, any mould to treat, and whether we need extra access for height. Your quote takes all of that into account.
Asking for a quote
There’s no need for technical detail. It helps if you can tell us:
- If someone has resealed it before
- Roughly how big the job is
- The type of property
- Where the job is, and your postcode
Quotes start with a quick conversation. Tell us what’s wrong, where it is and how much there is, and we’ll talk you through what we’d do. When it suits you, call 0345 464 0079 or email us.
Keeping the joints in good condition
After the cure time, these simple habits help:
- Keep jet washers away from the mastic
- Air rooms to keep condensation down around windows
- Use gentle cleaners on frames and sealant
- Look round the frames every year or so
A yearly look round the frames is enough. Cracks and lifting edges are easy to spot early, and if anything looks wrong, just phone 0345 464 0079 or email us.
A failed joint lets water into the wall a little at a time. You might not see it until plaster blows or a damp patch appears inside. Catching it early keeps the fix to a reseal.
Your questions about window mastic in Navestock Common
Do you work for landlords with property near Harold Wood station?
Yes, we work for landlords and letting agents. You can call 0345 464 0079 or send us an email with the address and a few details, and we’ll give you a fixed price before work begins.
Do you cover Navestock Common for window mastic?
Yes, Navestock Common is within the area we cover. We work across London and the South East. You can ring 0345 464 0079 or drop us an email and let us know what needs doing.
Which products do you use?
Quality sealants from brands including Arbo and Everbuild, picked for each joint. We’ll tell you what we’re using and why.
Is it OK to seal over old sealant?
No, because it fails. We remove every bit of old sealant first.
Do you hold any approvals?
Yes. ARBOMaster is the approved applicator scheme for Arbo sealants, and we are part of it.
How much does window mastic cost in Navestock Common?
Size, access and the old material all affect the cost. Ask us for a quote and we will talk you through it.
Can you get sealant to suit coloured frames?
Yes. Anthracite grey, black, brown and white cover most frames, with clear as an option.
Do you remove the old sealant?
Always. Sealing over old sealant is the main reason resealing fails early, so we never do it.
Different surfaces, different methods
Timber windows & doors
Older timber windows in stone or brick can suit sand mastic rather than modern sealant. We’ll tell you which suits your home.
Aluminium frames
Large aluminium doors have long joints down each side and across the head, and the bottom joint sees the most water. We prepare and reseal every joint, backing the deep ones.
Can I do it myself?
A DIY attempt doesn’t rule out a professional job. We remove it and do the joint properly, so just mention it when you contact us.
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.
Windows and doors in Navestock Common
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 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.
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. Letting a property close to Harold Wood station? Then renewing tired window mastic between tenants heads off draught and damp complaints.
Navestock Common is about 4 miles north of Romford, in Essex. Homes, rented property, offices and hotels in Navestock Common can book us for window mastic. The work is guaranteed for a year. Across Essex, we cover 644 places, Navestock Common among them. Chelmsford is on our list too, around 14 miles away.
All of CM14 is within our area for window mastic. Close by, we work in 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). Within a short drive, we also cover 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).
Local landmarks in Navestock Common
Locally, jobs take us to homes and businesses close to Dagnam Park and the streets around them. For rail, the closest station is Harold Wood station, roughly 3 miles south. Well-known places in the area include Romford Shopping Hall (3.8 miles south) and Harold Wood Hospital (2.9 miles south). Green spaces nearby include Bedfords Park.
How it works
Once we are on site, we compare the joints with what we discussed. If anything is different, we explain it before carrying on. Most jobs then take most of a day for a typical house, less for a few frames. Somewhere like Navestock Common needs a little journey planning: let us know about lanes, gates and parking. We bring what the job needs, so it can be finished in one trip where possible.
- First, we go round the frames with you and agree the list.
- We remove the old mastic and clean the frame edge and wall.
- Where the gap is deep, backing rod goes in first.
- 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.
Getting ready for the visit
- Mention any leaks or damp you’ve noticed
- Let us know about earlier repairs to the joints
- Let us know about stairs, lifts or work at height
How to get a quote
The more we know about the job, the more useful the quote. Let us know the location, the problem and roughly how many joints, and email photos if that’s easy.