Hertfordshire · England
Sand Mastic in Chorleywood West
We cover Chorleywood West 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 every job guaranteed for a year.
- Old sand mastic that has cracked, crumbled or fallen out
- Mastic that needs renewing before redecorating
- Open joints round the window box
When something else is needed
New sealant can’t fix everything, and we’d rather say so up front. Sealant won’t put right:
- Sash cords, weights and draught-proofing of the sashes
- Rotten sashes, sills or window boxes (a joiner’s job)
- Masonry that needs repairing
If in doubt, call 0345 464 0079 or send us an email and we will say what we think before booking.
What we seal
- Tenement windows
- Sash and case windows
- Brick reveals
- Stone surrounds
- Timber door frames
- Period & listed homes
About our sand mastic in Chorleywood West
For a listed home or one in a conservation area, ask your local planning authority if consent is needed before window work. Sand mastic is often favoured as a like-for-like material. If you have mastic that needs renewing before redecorating and weathered mastic on the most exposed windows, we can put it right, on brick reveals, stone surrounds and tenement windows alike.
In a village or hamlet like Chorleywood West, older cottages and farmhouses often have timber windows set in stone or brick. Not every older frame suits a modern silicone bead, and sometimes a traditional sand mastic is the better choice.
The work is covered for a year after we finish. If there’s a problem with it, please ring 0345 464 0079 or send us an email.
- Where
- Chorleywood West (WD3)
- Wider area
- Hertfordshire
- Guarantee
- 12 months on all our work
- Price
- A clear quote up front
- Call
- 0345 464 0079
- Updated
- 26 October 2026
Towns and villages near Chorleywood West
Other services in Chorleywood West
Chorleywood West: your questions answered
Do you work for landlords with property near Rickmansworth station?
Yes, we work for landlords and letting agents. Just ring 0345 464 0079 or email us and tell us about the property, and we will give you a clear price.
Do you cover Chorleywood West for sand mastic?
Yes. We work across London and the South East, and Chorleywood West is part of that. You can call 0345 464 0079 or send us an email and tell us what needs doing, and we will send you a clear quote.
How long does sand mastic take to harden?
It takes a while. It skins first and hardens fully later, and we will tell you what to expect.
What should I tell you?
Where the job is, what the problem is and roughly how big it is. If you can, email a few photos.
Is it messy?
Very little: the area around the joints is protected first, and we tidy up before we go.
Should I use sand mastic or silicone?
It depends on the window. On many period windows, sand mastic looks right and suits the building, while modern frames normally get a flexible sealant.
How long does the job take?
That depends on how much there is to do, but most jobs take a few hours per window, depending on the condition of the joints. We will give you a better idea when we quote.
What exactly is sand mastic?
It’s the traditional filler for the joint round timber windows and doors. It’s made with sand and a linseed-oil-based binder.
How it works
All our tools and materials come with us in the van. Once we have agreed what’s being done, we protect the area and start. Most jobs take a few hours per window, depending on the condition of the joints. In a small place like Chorleywood West, access is generally the main thing to plan. For outside work, also let us know about exposed walls and any outbuildings involved.
- Each surround is checked first.
- The joint is raked out and cleaned.
- Large voids are packed out.
- We point the joint with sand mastic by hand.
- The finish is dressed neatly.
Preparing for the visit
- Tell us about access, such as stairs, a lift or high-level joints
- Let us know about earlier repairs to the joints
- Clear items away from the joints we’re working on
Getting a quote
A good description makes for an accurate quote. Let us know the location, the problem and roughly how many joints, and add pictures by email if you can.
Advice
What sand mastic looks like in Chorleywood West
The South East is one of the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day. Historic houses like Chenies Manor House (about 2.8 miles north-west) are a reminder that the area around Chorleywood West has older buildings as well as new. In older buildings, older timber frames in brick or stone need a different approach from a modern uPVC window.
If you live in an older home near Church of St Peter, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint. Schools such as Arnett Hills Junior Mixed and Infant School are buildings too, and the mastic around its windows and doors needs looking after like any other building’s.
Chorleywood West is about 1 mile east of Chorleywood, in Hertfordshire. From the centre of Chorleywood West to the outskirts, sand mastic is available for homes and businesses alike. Across Hertfordshire, we cover 381 places, Chorleywood West among them. Our London page covers work nearby, about 20 miles away.
All of WD3 is within our area for sand mastic, from the main roads to the quietest streets. We cover properties on Chess Lane, Valley Road and Sarratt Lane and the roads around them. Nearby, we also carry out sand mastic in Loudwater (1 mile north), Rickmansworth (1 mile south-east), Mill End (1 mile south-west), Croxley Green (2 miles east) and Micklefield Green (2 miles north). Within a short drive, we also cover Watford (4 miles east), Hemel Hempstead (7 miles north), St Albans (10 miles north-east), Harpenden (13 miles north-east), Hatfield (13 miles north-east) and Borehamwood (9 miles east).
What’s near Chorleywood West
We work in homes and buildings around Rickmansworth Park, York House School and Saint Joan of Arc Catholic School and the streets around them. The nearest railway station is Rickmansworth station, roughly 0.8 miles south-east. Well-known places in the area include Bishops Wood Hospital (2.8 miles south-east) and Charter Place (3.7 miles east). Open spaces near Chorleywood West include Chorleywood Common and Tumbling Bay.
Landlords, agents and businesses in Chorleywood West
We regularly work with letting and managing agents. Send the address, what’s needed and the access arrangements and we will quote.
Businesses can book us for washrooms, kitchens, offices and more. On commercial sites, working times can be discussed when we quote.
How the job changes by surface
Sash and case windows
Sash windows are where we do most sand mastic work. We renew the mastic round each box.
Tenement and terrace windows
Upper-floor windows need access planning. Let us know the floor and we will confirm access.
How we quote for sand mastic
We quote each job individually. These are the things that affect it:
- Whether old sealant or filler has to be cut out
- The number and length of the joints
- How many areas need sealing
- The type of sealant required
Combining jobs into one visit is normally more efficient than separate visits, so tell us about everything that needs sealing. We will send you a clear quote for the lot.
Asking for a quote
What to tell us when you ask for a quote:
- Where the job is, and your postcode
- What the problem is, such as mould, gaps, leaks or cracking
- A few pictures by email, if you can
- Access, such as stairs, a lift or height
Want a quote for sand mastic? Please phone 0345 464 0079 or drop us an email and tell us about the job. You will know what we plan to do, and what it will cost, before any work begins.
Looking after it afterwards
After the cure time, these simple habits help:
- Don’t paint over the new mastic
- Avoid patching sand mastic with silicone
- Check with your local planning authority if your home is listed
- Keep sills and gutters clear so water drains away
Do not run silicone over the new mastic. If anything cracks, get it looked at before trying a quick fix.
Gaps round a sash box let in draughts and rain. The longer it’s left, the more the joint opens.
Signs you need sand mastic in Chorleywood West
Rain on the window surround works into any crack and loosens it further. Windows facing the weather tend to go first.
Any of these means the joints need attention:
- Draughty sash windows at the surround
- A silicone bead on a sash window that spoils the look
- Cement or filler used on old window joints that has cracked
- Mastic dropping out of the joint
If you let a flat or house near Rickmansworth station, older sash windows in a rental need their mastic kept sound to keep the weather out.
Before you book anyone
- How long to leave it before use
- Which sealant they’ll use, and why
- Is VAT in the price?
- Whether you can choose the colour