Kent · England
Sand mastic for sash & case windows in Hazelwood, Kent
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for homes and businesses in Hazelwood and across Kent. Fully insured, ARBOMaster approved and guaranteed for a year.
- Cement or filler used on old window joints that has cracked
- Mastic worn away on windows facing the weather
- Old sand mastic that has cracked, crumbled or fallen out
Sand mastic for homes and businesses in Hazelwood
Old sand mastic cracks, crumbles and falls out over time and gaps open up round the frame. Renewing it closes the gap so the surround looks right again. Common call-outs are for cracked mastic round a front door frame and modern sealant on a period surround, across tenement windows, brick reveals and sash and case windows.
Somewhere as small as Hazelwood, older homes often have timber frames set in stone or brickwork. Older buildings like these do not always suit modern silicone, so the sealant has to be chosen to suit the building.
We guarantee the work for a year. If something is not right with it in that time, tell us and we’ll put it right.
- Where
- Hazelwood (TN14)
- Wider area
- Kent
- Cover
- One year on every job
- Quote
- A clear quote up front
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
Landlord and commercial work in Hazelwood
Housing providers, facilities teams and property managers book us too. We can quote a run of properties together.
If you manage several properties in or around Hazelwood, jobs at different addresses can be quoted together. Send us the addresses and the work at each, and pictures by email help.
FAQs for Hazelwood
Can you help a landlord with a rental near Chelsfield station?
Yes, we work for letting agents and landlords. You can phone 0345 464 0079 or email us with the address and a few details, and we’ll give you a fixed price before work begins.
Is Hazelwood within the area you cover?
Yes. Hazelwood is within the area we cover, which takes in towns, villages and rural addresses. Our work covers London and the South East. Just mention lanes, gates or anything else about the route when you book.
Do you offer different sealant colours?
In most cases you can choose. We’ll explain which colours are available.
Can you work on commercial sites?
Yes. Commercial and hotel work is a large part of what we do, as well as homes. We can talk about working times when we quote.
Will it make a mess?
We keep the work tidy. Nearby surfaces are protected, and we clear up when we’re done.
Is sand mastic better than silicone for my windows?
We will help you decide. Period homes often look best with sand mastic, and modern sealants suit newer frames.
What guarantee comes with the work?
There’s a 12-month guarantee on every job.
How much does sand mastic cost in Hazelwood?
Size, access and the old material all affect the cost. Ask us for a quote and we will talk you through it.
How the visit works
We work through the job in order: protection first, then preparation, sealing and a tidy-up. For most jobs that takes a few hours for a single window, longer for several. Somewhere as small as Hazelwood, access is often the only tricky part. For outside work, also let us know about exposed walls and any outbuildings involved.
- First we agree which joints need doing.
- We remove the old, loose mastic.
- Deep gaps are packed so the mastic sits at the right depth.
- The sand mastic is mixed and pressed into the joint by hand.
- The surface is finished to suit the stone or brick.
How to prepare
- Mention if the joints have been sealed before
- Let us know about stairs, lifts or work at height
- On commercial sites, let us know about site rules
Getting a quote
For sand mastic in Hazelwood, call 0345 464 0079 or drop us an email. Tell us what the problem is and where, and we’ll agree the price before any work begins.
Advice
What affects the quote in Hazelwood
We quote each job individually. These are the things that affect it:
- How many rooms, windows or areas are involved
- How easy the joints are to reach
- The type of sealant required
- Any working-time requirements on site
The cost reflects the work involved, not a rough estimate. That is why we ask a few questions first.
Helping us quote
What to tell us when you ask for a quote:
- Pictures of the joints, sent by email
- The address or postcode of the job
- What’s wrong with the joints now
- The rough size of the job
For a quote, call 0345 464 0079 or email us with the location and a short description of the problem. We will give you a clear quote before any work starts.
How the job changes by surface
Brick reveals
An open joint at a brick reveal lets weather in. New mastic seals the gap.
Stone surrounds
Stone surrounds suit sand mastic well. The finish blends with the masonry.
Should I try it myself first?
Not every job suits DIY: work at height, external movement joints, fire-rated sealant and large areas need the right product, the right access and the right method.
What a professional job adds is preparation and the right product. We take joints back to clean, dry surfaces, and the sealant is chosen for how the joint moves and where it is.
Sand mastic in Hazelwood: local notes
The South East is one of the drier parts of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind. With historic houses such as Down House (about 1 mile west) nearby, there’s older building stock in the area around Hazelwood as well as newer homes. In older buildings, older timber frames in brick or stone need a different approach from a modern uPVC window.
Schools such as Downe Primary School are buildings too, and the mastic around its windows and doors needs looking after like any other building’s. Homes close to St Mary's Church include some older properties, and frames set in older brick or stone need a sealant that suits the wall as well as the frame.
Hazelwood is about 4 miles south of Orpington, in Kent. Whether you’re in the middle of Hazelwood or further out, sand mastic is available for homes and businesses alike, from flats and houses to offices and hotels. Our Kent coverage runs to 922 places, and Hazelwood is one of them. There’s also a page for London, about 14 miles away.
All of TN14 is within our area for sand mastic, from the main roads to the quietest streets. Streets in the area include Hazelwood Road, Cudham Lane North and Spinney Way, all of which we cover. If you are just outside Hazelwood, we cover Downe (1 mile west), Luxted (1 mile south-west), Cudham (1 mile south), Single Street (1 mile south-west) and Green Street Green (1 mile north-east). Within a short drive, we also cover Dartford (10 miles north-east), Sevenoaks (6 miles south-east), Gravesend (15 miles north-east), Tonbridge (13 miles south-east), Northfleet (14 miles north-east) and Swanley (6 miles north-east).
Around Hazelwood
Typical jobs here are in homes near George and Dragon pub and Green Street Green Primary School. The closest station to Hazelwood is Chelsfield station, about 2.1 miles north-east of the centre. Other landmarks nearby include Orpington Hospital (2.1 miles north-east) and Crofton Roman Villa (2.7 miles north). For a walk, there’s Betsom's Hill and Downe Bank Nature Reserve.
Places near Hazelwood
More services for Hazelwood
What sealant work cannot fix
Honest advice matters more to us than a booking, so here’s what new sealant will not do:
- Sash cords, weights and draught-proofing of the sashes
- Putty and glazing repairs
- Decisions on consent for listed homes
If in doubt, ring 0345 464 0079 or drop us an email and we’ll say what we think.
Joints and surfaces we work on
- Period & listed homes
- Brick reveals
- Tenement windows
- Timber door frames
- Sash and case windows
- Stone surrounds
Common problems we fix in Hazelwood
Scraping and sanding before painting can loosen old mastic. It’s often found when windows are being prepared for paint, which is a good time to renew it.
Any of these means the joints need attention:
- Window mastic to renew ahead of painting
- Cracked mastic round a front door frame
- Failed mastic on an exposed elevation
- Mastic dropping out of the joint
For landlords with property near Chelsfield station, older sash windows in a rental need their mastic kept sound to keep the weather out.
What your quote should include
- What guarantee comes with the work
- Which sealant they’ll use, and why
- What happens if they find a problem under the old sealant
- Whether they seal over old material or remove it