Greater London · England
Dagenham Dock Sand Mastic
Our applicators work in Dagenham Dock on traditional burnt sand mastic around sash and case windows and doors in stone and brick. Old material cut out, joints cleaned and sealed neatly and a one-year guarantee.
- Old sand mastic that has cracked, crumbled or fallen out
- Cement or filler used on old window joints that has cracked
- Window mastic to renew ahead of painting
Sand mastic for homes and businesses in Dagenham Dock
Our applicators renew the sand mastic around sash and case windows and doors in stone and brick. Out comes the old, loose mastic, and new mastic is applied and shaped by hand. If you’re dealing with crumbling sand mastic round a window and mastic that needs renewing before redecorating, we can put it right.
London’s Victorian and Edwardian terraces were built with timber sash windows, and many still have them or their replacements. Either way, the mastic between frame and brickwork is what stops draughts and rain getting in.
Big or small, you get the same one-year guarantee in Dagenham Dock and across Greater London.
- Where
- Dagenham Dock (RM9, SE28, IG11)
- Wider area
- Greater London
- Guarantee
- A year, on every job
- Quote
- Quoted before any work starts
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
Looking after it afterwards
No joint lasts for ever, but care makes a real difference. Our tips:
- Ask the planning authority about consent for listed or conservation-area homes
- Avoid heavy scraping on the mastic joint
- Have rotten timber repaired before new mastic goes in
- Check the mastic when you check the paintwork
Don’t run silicone over the new mastic. If you see a crack, ask us to take a look rather than patching it.
Good mastic helps keep the frame dry. Once it fails, water can sit against the timber, which can lead to rot.
Should I try it myself first?
Some jobs are best left to a professional: work at height, external movement joints, fire-rated sealant and large areas call for the right materials, safe access and experience.
A DIY attempt doesn’t rule out a professional job. We cut it out and start again, so just mention it when you contact us.
FAQs for Dagenham Dock
Is parking a problem for a job in Dagenham Dock?
London parking needs a little planning, so let us know about permits, bays or a driveway when you book. That way the visit can be planned around it.
Can you help a landlord with a rental near Dagenham Dock station?
Yes. We work for landlords and agents as well as homeowners, and several properties can be quoted together. You can call 0345 464 0079 or drop us an email with the details for a clear quote.
Which products do you use?
Products from Arbo and Everbuild, among others, picked for each joint. We explain the product when we quote.
What’s sand mastic made of?
It’s the traditional filler for the joint round timber windows and doors. It’s made with sand and a linseed-oil-based binder.
Do you offer different sealant colours?
We help you choose a colour that suits. The choice depends on the product the joint needs.
Do you come to Dagenham Dock?
Yes. We’re based in Crawley and work across South East England, London and Scotland.
What guarantee comes with the work?
You get our 12-month guarantee to all our work.
Do the sealants smell?
There can be a smell while the sealant cures. Opening a window helps.
Why act early in Dagenham Dock
Gaps round a sash window let in rain and draughts. Left, water can reach the timber and the wall, so dealing with it now protects both. Converted houses in London often have a bathroom above someone else’s living room, so a small leak from tired sealant can mean a neighbour’s ceiling and a lot of disruption. Putting it right early is much less trouble.
Combining jobs into one visit generally makes better use of the time than several visits. We’ll give you a clear price for the lot.
Why us?
- ARBOMaster approved applicator
- 12-month guarantee on every job
- Experience in homes, commercial sites and hotels
- Full insurance on every job
Read what affects the cost and our reviews.
What sand mastic looks like in Dagenham Dock
In a converted house or block, who looks after the windows depends on the lease, so it’s worth checking before booking. With historic houses such as Eastbury Manor House (about 2.1 miles north-west) nearby, there’s older building stock in the area around Dagenham Dock as well as newer homes. In older buildings, older frames set in brick or stone need a sealant that suits them, and sometimes that is traditional sand mastic.
Schools such as St Peter's Catholic Primary School are buildings too, and its window and door frames need their mastic kept sound, just like a home’s. For landlords with property near Dagenham Dock station, older sash windows in a rental need their mastic kept sound to keep the weather out.
Dagenham Dock is about 2 miles south-west of Dagenham, in Greater London. Every kind of property in Dagenham Dock can book us for sand mastic, old or new, large or small. The work is guaranteed for a year. Dagenham Dock is one of 764 towns and villages in Greater London we cover. For nearby work, see our London page.
We cover every part of the RM9, SE28 and IG11 postcode area for sand mastic. If you need sand mastic at a property on Perry Road, Choats Road and Chequers Lane or anywhere close by, our applicators can take on the job. If you’re just outside Dagenham Dock, we cover Dagenham Green (1 mile north-east), Hornchurch Marshes (1 mile east), Thamesmead (1 mile south-west), Beam Park (1 mile east) and Barking Riverside (1 mile west). We also work in nearby towns such as London (10 miles west), City of Westminster (13 miles west), Marylebone (12 miles west), Kensington (15 miles west), St Pancras (11 miles west) and Shoreditch (9 miles west).
Landmarks near Dagenham Dock
Typical jobs here are in homes near Riverside School and Parsloes Park and the streets around them. The nearest railway station is Dagenham Dock station, about 0.5 miles north of the centre. Other landmarks nearby include Barking Community Hospital (2.3 miles north-west) and Gallions Reach Shopping Park (2.7 miles west). For a walk, there’s Scrattons Eco Park.
Nearby places to Dagenham Dock
What else we do in Dagenham Dock
When to call us in Dagenham Dock
Decorating can disturb tired mastic. It’s often found when windows are being prepared for paint.
The problems people usually mention when they call include:
- Weathered mastic on the most exposed windows
- Cement or filler used on old window joints that has cracked
- Gaps between timber frames and stone or brick
- Tired mastic found when preparing windows for paint
As a London address, Dagenham Dock can be tricky for parking: tell us about permits, visitor bays or off-street space when you book.
Comparing quotes
- What product goes in the joint
- The length of the guarantee
- Which colour the sealant will be
- How the surfaces are prepared before sealing
How we quote for sand mastic
The price is agreed before any work begins. It’s based on:
- Whether the work is at height
- Any working-time requirements on site
- The size of the job
- The product the joint needs
A few things move the cost up or down: the old material and how easily it comes out, any mould to treat, and whether the work is at height. We take all of that into account in your quote.
What to tell us for a quote
Before you ask for a quote, have a think about:
- If it’s domestic, commercial or a hotel
- Photos by email, if that is easy
- What’s wrong with the joints now
- Whether it has been sealed before
Need a quote? Please call 0345 464 0079 or drop us an email and tell us about the job. We’ll explain what we’d do and send you a clear quote before work begins.
How the visit works
Most of a good job is in the preparation, and we don’t rush it. Joints are cleaned back and dried before anything new goes in. In total, it generally takes a few hours for a single window, longer for several. In Dagenham Dock, flats, stairs and shared entrances are part of the routine. If the building has a concierge, managing agent or access rules, tell us when you book.
- Each surround is checked first.
- 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.
- The finish is dressed neatly.
Before we arrive
- Let us know about stairs, lifts or work at height
- For indoor joints, keep the area dry beforehand if you can
- Mention any leaks or damp you’ve noticed
Ask for a quote
Every job is quoted individually, so start by telling us what you need. Just ring 0345 464 0079 or drop us an email with the details, and pictures are welcome.
Advice
What the job involves on each surface
Period and listed homes
Materials matter on listed and conservation-area homes. Sand mastic is often the preferred finish.
Brick reveals
Brick reveals round timber windows are often pointed with sand mastic. It gives a traditional finish.