Medway · England
Sand mastic for sash & case windows in Lordswood, Medway
We cover Lordswood for traditional burnt sand mastic around sash and case windows and doors in stone and brick. Old sealant removed completely, joints prepared properly and a 12-month guarantee.
- Cement or filler used on old window joints that has cracked
- Draughty sash windows at the surround
- Silicone on a period window that looks wrong
How we handle sand mastic in Lordswood
We work across Lordswood renewing sand mastic on sash windows and doors. Each joint is raked out, prepared and pointed by hand, finished to suit the masonry. Common call-outs are for mastic that needs renewing before redecorating and mastic round period door frames that has failed, on period & listed homes, brick reveals and tenement windows.
Homes around Lordswood range from older properties to newer houses, and their windows range just as widely. The right sealant depends on the frame and on what it sits in.
Your job is guaranteed for a year, as with all our work.
- Place
- Lordswood (ME5, ME7)
- Wider area
- Medway
- Guarantee
- 12 months on all our work
- Quote
- A clear price before we start
- Call
- 0345 464 0079
- Updated
- 26 October 2026
When something else is needed
It helps to know what we can’t do too:
- Timber that has rotted
- Sashes that need overhauling
- Putty and glazing repairs
If you are not sure, just call 0345 464 0079 or drop us an email and we’ll give you a straight answer before you book.
Joints and surfaces we work on
- Sash and case windows
- Brick reveals
- Period & listed homes
- Timber door frames
- Tenement windows
- Stone surrounds
Looking after it afterwards
Aftercare is simple:
- Get any rot dealt with first
- Keep sills and gutters clear so water drains away
- Plan mastic work ahead of painting
- Do not run silicone over sand mastic
Keep gutters and sills clear so water runs away from the surround. Water sitting against the mastic shortens its life.
An open joint round the box lets weather through. The longer it’s left, the more the joint opens as more mastic falls out.
For landlords and businesses
Water getting past a failed joint can damage the building, which matters even more when someone else lives there. Resealing at the right time is simple maintenance.
Landlords and agents in Lordswood can book us as well as homeowners. Sealant work between tenants keeps a property looking cared for.
How the job changes by surface
Timber door frames
Sand mastic is used round timber door frames too. The method is the same as for windows.
Tenement and terrace windows
Upper-floor windows need access planning. Let us know the floor and we’ll confirm access.
Also near Lordswood
Also in Lordswood
Common questions in Lordswood
Is Lordswood within the area you cover?
Yes, Lordswood is covered. We work across London and the South East, from towns to the smallest places. The journey is planned ahead, so it helps to know about access.
Do you cover Lordswood for sand mastic?
Yes, Lordswood is within the area we cover. We work across London and the South East. You can ring 0345 464 0079 or email us and let us know what needs doing, and we will give you a clear quote.
Can you replace silicone on a period window with sand mastic?
In most cases. We remove the silicone and clean the joint before the sand mastic goes in.
Can you work on commercial sites?
Yes. We have worked for hotels, offices and other businesses.
How long does sand mastic take to harden?
It takes a while. The skin forms first, and the full set comes later, and we’ll tell you what to expect.
What do you need from me for a quote?
Where the job is, what the problem is and roughly how big it is. If you can, email a few photos.
What does sand mastic cost?
There’s no set price, as it depends on the job: how much there is, what’s there now, how we reach it and what it needs. You’ll get a clear quote before we start.
Are you fully insured?
Yes. We are fully insured, and we can confirm the details when we quote.
What sand mastic looks like in Lordswood
Historic houses like Restoration House (about 3.9 miles north-west) are a reminder that the area around Lordswood 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. London and the South East are among the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
If you let a flat or house near Chatham station, older sash windows in a rental need their mastic kept sound to keep the weather out. In the older streets around St David's Church, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint.
Lordswood is about 2 miles south of Chatham, in Medway. Every kind of property in Lordswood is covered for sand mastic. The work is guaranteed for a year. Our area takes in 68 places across Medway, from the larger towns to small villages. We also work in Chelmsford, about 28 miles from Lordswood.
All of ME5 and ME7 is within our area for sand mastic. Sand mastic is available to properties on Hall Road, Rover Road and Gould Road. Neighbouring places we cover for sand mastic include Lidsing (1 mile south-east), Walderslade (1 mile west), Dunn Street (1 mile south-east), Bredhurst (1 mile east) and Hempstead (2 miles north-east). Within a short drive, we also cover Gillingham (3 miles north-east), Rochester (4 miles north-west), Rainham (3 miles north-east), Strood (5 miles north-west), Twydall (3 miles north-east) and Hoo St Werburgh (6 miles north). Being one of Medway’s larger places, Lordswood has every kind of property, from flats to offices.
Local landmarks in Lordswood
In Lordswood, that means homes and buildings near Greenacre Academy, South Wood and The Harrow pub and the streets around them. Lordswood’s nearest station is Chatham station, about 3.2 miles north. Other landmarks nearby include Pentagon Shopping Centre (3.4 miles north) and Medway Maritime Hospital (3 miles north). Green spaces nearby include Burham Down and Boxley Hills.
Can I do it myself?
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.
Some sealant jobs are within reach of a careful DIYer, such as a straightforward joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
How it works
We keep the work tidy and contained to the joints we are treating, so you can carry on as normal. The job usually takes a few hours per window, depending on the condition of the joints, and we tell you how long to leave it before we go. A visit to Lordswood is planned like any other: the time, the access and where to park are agreed in advance. If the work is outside, the weather plays a part, as sealant needs a dry surface.
- We look at the surrounds with you and agree the joints to renew.
- We remove the old, loose mastic.
- Deep gaps are packed so the mastic sits at the right depth.
- We apply the mastic by hand and shape it.
- The surface is finished to suit the stone or brick.
Preparing for the visit
- On commercial sites, let us know about site rules
- Mention any parking rules near the property
- Keep pets and children clear of the area while we work
Getting a quote
It all starts with a short chat. Tell us what’s wrong, where it is and how much there is, and we will explain how we’d tackle it. When it suits you, call 0345 464 0079 or drop us an email.
Related advice
When to call us in Lordswood
Age is the main cause. Sand mastic is a maintenance item like any pointing, depending on exposure and upkeep.
These are the problems we are asked about most:
- Weathered mastic on the most exposed windows
- Mastic that needs renewing before redecorating
- Cracked mastic round a front door frame
- Silicone on a period window that looks wrong
Schools such as St Benedict's Catholic Primary School are buildings too, and its window and door frames need their mastic kept sound, just like a home’s.
Questions to ask before booking
- Which colour the sealant will be
- What product goes in the joint
- What happens if the job turns out different
- Are they insured?