Kent · England
Upstreet Sand Mastic
We cover Upstreet for 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 12-month guarantee.
- Cement or filler used on old window joints that has cracked
- Mastic worn away on windows facing the weather
- Mastic that needs renewing before redecorating
What affects the quote in Upstreet
Call for a quick quote. What matters most is:
- How many rooms, windows or areas are involved
- Whether there’s mould to deal with
- Whether the work is at height
- The type of sealant required
Homes and businesses are quoted the same way: the amount of work, how we reach it and what it needs, plus any working-time requirements on site. Ask us for a quote and we will go through it with you.
What we need to know
To make quoting easier, let us know:
- The problem you’ve noticed
- The type of property
- Photos by email, if that is easy
- How many joints, rooms or windows are involved
Want a quote for sand mastic? Please call 0345 464 0079 or email us and tell us about the job. You will know what we plan to do, and what it will cost, before any work begins.
Sand mastic in Upstreet, done properly
A silicone bead around a sash window can look out of place and does not suit the building. Sand mastic gives a finish that matches the age of the house and we can swap the silicone for it. Common call-outs are for failed mastic on an exposed elevation and window mastic to renew ahead of painting, on stone surrounds, brick reveals and sash and case windows.
Mastic can only go onto a dry, clean joint, so window work in Upstreet is booked around the forecast. Tell us about access to every side of the house, including upper-floor windows.
You get a one-year guarantee, the same in Upstreet as everywhere else we work.
- Where
- Upstreet (CT3)
- Wider area
- Kent
- Guarantee
- 12 months on all our work
- Quotes
- A clear quote up front
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
How to look after the new joints
Aftercare is simple:
- Plan mastic work ahead of painting
- Avoid patching sand mastic with silicone
- Have rotten timber repaired before new mastic goes in
- Avoid heavy scraping on the mastic joint
When preparing windows for paint, take care around the mastic. Hard scraping can loosen it.
Gaps round a sash box let in draughts and rain. Left, the gap tends to get bigger.
What the job involves on each surface
Timber door frames
Sand mastic is used round timber door frames too. We renew it the same way as on windows.
Tenement and terrace windows
Upper-floor windows need access planning. Let us know the floor and we will confirm access.
How the visit works
The work is kept neat and contained to the area we’re working on, so you can get on with your day. The job usually takes a few hours for a single window, longer for several. For a village or hamlet like Upstreet, the journey is planned in advance: tell us about narrow lanes, gates, long drives and where we can park. We bring what the job needs, so it can be finished in one trip where possible.
- First we agree which joints need doing.
- Old mastic and any loose material are raked out.
- We pack any deep voids first.
- The sand mastic is mixed and pressed into the joint by hand.
- The surface is finished to suit the stone or brick.
Before we arrive
- Mention any sign-in or site rules at work premises
- Tell us about any previous sealing or DIY attempts
- Try not to wet indoor joints just before the visit
Get a quote
Call for a quick quote, or send an email if you’d rather. Tell us about the joints that need doing and we will talk you through the work before giving you a price.
Advice
Frames and glazing around Upstreet
The South East is one of the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
Rented homes near Sturry station change hands often, and older sash windows in a rental need their mastic kept sound to keep the weather out. Homes close to Church of St Mary the Virgin include some older properties, and the joint between an old wall and a newer frame is usually the first place rain gets in.
Upstreet is about 4 miles south-east of Herne Bay, in Kent. Every kind of property in Upstreet is covered for sand mastic. The work is guaranteed for a year. Upstreet is one of 922 places in Kent where we work. Chelmsford is on our list too, about 42 miles from Upstreet.
Jobs for sand mastic in CT3 is quoted and booked the same way as anywhere else. Whether your property is on St Mary's Gardens, Becketts Wood and Grove Ferry Hill or anywhere close by, we can help. Neighbouring places we cover for sand mastic include Grove (1 mile south), West Stourmouth (2 miles east), Sarre (2 miles north-east), Preston (2 miles south-east) and East Stourmouth (2 miles east). Larger places within reach include Canterbury (6 miles south-west), Margate (9 miles north-east), Dover (14 miles south), Ramsgate (9 miles east), Broadstairs (10 miles east) and Whitstable (8 miles west).
Local landmarks in Upstreet
Around Upstreet, our work takes us to homes and buildings near Grove Ferry Picnic Area, Spires Academy and The Grove Ferry Inn. The nearest railway station is Sturry station, about 3.8 miles south-west. A little further out are St Martins Hospital (5.2 miles south-west). The countryside around Upstreet includes West Blean and Thornden Woods.
What happens if it’s left?
Cement-based fillers and modern sealants do not always suit a period surround. Sand mastic matches what was there and that can be important for listed homes. In a small place like Upstreet, homes can be exposed to wind and rain, which finds any gap, and damp in older walls is slow to dry out.
A failed joint rarely gets cheaper to fix by waiting, because water and mould keep working on it. If you are unsure, call 0345 464 0079 or email us and we will give you an honest view and a quote.
What you get with us
- Fully insured
- Every job guaranteed for a year
- Over 20 years’ experience
- 4.9 on Google from 180+ five-star reviews
Do you need sand mastic in Upstreet?
Timber frames move with the seasons. That movement opens up the mastic joint little by little.
These are the problems we are asked about most:
- Mastic worn away on windows facing the weather
- A silicone bead on a sash window that spoils the look
- Patchy fillers round a sash window
- Draughts and rain around sash boxes
For site and facilities teams at buildings such as Chislet Church of England Primary School, the mastic around its windows and doors needs looking after like any other building’s.
Questions to ask before booking
- Whether the sealant suits the joint
- How the colour is chosen
- Is VAT in the price?
- How the joint is cleaned and prepared
Places near Upstreet
Also in Upstreet
Upstreet questions
Do you cover Upstreet for sand mastic?
Yes, Upstreet is within the area we cover. Our work covers London and the South East. Just call 0345 464 0079 or email us with a few details of the job, and we’ll send you a clear quote.
Will you come out to Upstreet?
Yes, we do. Our work covers London and the South East, and smaller places are part of that. The journey is planned ahead, so it helps to know about access.
Is it OK to seal over old sealant?
No, because it fails. The old sealant always comes out first, so the new joint bonds to clean surfaces.
Is the work guaranteed?
Every job comes with our one-year guarantee.
Do you do commercial work?
Yes. Larger jobs can be planned room by room or area by area.
What do you put in the joint?
Quality sealants from brands including Arbo and Everbuild, picked for each joint. We explain the product when we quote.
Do you remove the old sealant?
Yes, every time. New sealant won’t bond properly to old, so the joint is cleaned back first.
What exactly is sand mastic?
Sand plus a binder based on linseed oil. It’s applied by hand and shaped to suit the surround.
Landlords, agents and businesses in Upstreet
From a single let to a portfolio, you get the same standard of work: old sealant fully removed, joints prepared properly and a 12-month guarantee.
If you manage several properties in or around Upstreet, jobs at different addresses can be quoted together. Send us the addresses and the work at each, and pictures by email help.