Medway · England
Sand Mastic in Upper Upnor
Sand mastic in Upper Upnor from a team with over 20 years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Mastic dropping out of the joint
- Gaps between timber frames and stone or brick
- Modern sealant on a period surround
Signs you need sand mastic in Upper Upnor
Age is the main cause. Sand mastic is a maintenance item like any pointing and how long it lasts depends on the weather it faces.
People usually contact us when they notice one of these:
- Mastic worn away on windows facing the weather
- Gaps where the frame meets the masonry
- Draughty sash windows at the surround
- A silicone bead on a sash window that spoils the look
If you live in an older home near St Philip & St James, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint.
Before you book anyone
- Who turns up on the day
- Whether they seal over old material or remove it
- The length of the guarantee
- Which sealant they’ll use, and why
Sand mastic for homes and businesses in Upper Upnor
A silicone bead around a sash window can look out of place and is not always the right material. Sand mastic is the traditional choice and we can swap the silicone for it. Common call-outs are for mastic that needs renewing before redecorating and old cement repairs round a window that have failed, across period & listed homes, timber door frames and tenement windows.
Homes in small places like Upper Upnor often stand in the open, with little to shelter their windows from wind and rain. Exposed frames and sills lose their mastic sooner than sheltered ones.
All of our work is guaranteed for twelve months, in Upper Upnor and everywhere else we cover.
- Where
- Upper Upnor (ME2)
- Region
- Medway
- Cover
- A year, on every job
- Quotes
- A clear quote up front
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
Landlords, agents and businesses in Upper Upnor
Failed sealant is one of the commonest items on a check-out report. Several properties can be quoted together.
From a single let to a portfolio, the work is the same standard: the old material taken out, careful preparation and a 12-month guarantee.
When it isn’t the sealant
In fairness, there are a few things sealant won’t fix:
- Planning or listed building consent (your local planning authority decides)
- Cracked or broken glass
- Sash cords, weights and draught-proofing of the sashes
If in doubt, phone 0345 464 0079 or drop us an email and we will say what we think.
Where we work in Upper Upnor
- Brick reveals
- Tenement windows
- Period & listed homes
- Timber door frames
- Stone surrounds
- Sash and case windows
Quotes for sand mastic in Upper Upnor
Some jobs are bigger than they look, and some smaller. What affects the quote:
- Whether old sealant or filler has to be cut out
- The size of the job
- Access and height
- Mould in or behind the old joints
Commercial jobs are quoted on the same basis as homes: the amount of work, the access and the products needed, plus any working-time requirements on site. Ask us for a quote and we’ll go through it with you.
What to tell us for a quote
The more you tell us, the more accurate the quote. When you get in contact, it helps to mention:
- What’s wrong with the joints now
- Where the job is, and your postcode
- A few pictures by email, if you can
- How many joints, rooms or windows are involved
Every job is quoted individually, so the first step is telling us about yours. Just call 0345 464 0079 or drop us an email with the details, and photos are welcome.
Also near Upper Upnor
More services for Upper Upnor
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
Where a building is shared, window work may involve neighbours so it’s worth checking responsibilities.
What happens on the day
Before we leave, we go over the finished joints with you and explain the cure time. The work normally takes a few hours per window, depending on the condition of the joints, depending on the size of the job. For a village or hamlet like Upper Upnor, the journey is planned in advance: tell us about narrow lanes, gates, long drives and where we can park. Everything for the job comes with us, so a second trip is avoided where possible.
- Each surround is checked first.
- We rake out the old mastic and clean the joint.
- Large voids are packed out.
- We point the joint with sand mastic by hand.
- The finish is dressed neatly.
Getting ready for the visit
- On commercial sites, let us know about site rules
- Keep children and pets away from the work area
- Where the joints are inside, avoid wetting them before we arrive
Ask for a quote
A good description makes for an accurate quote. Tell us where the job is, what’s wrong and how much there is, and add pictures by email if you can.
Advice
Common questions in Upper Upnor
Do you cover smaller places like Upper Upnor?
Yes. Upper Upnor is within the area we cover, which takes in towns, villages and rural addresses. Our work covers London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
I let a flat near Strood station. Can you help?
Yes. We work for landlords and letting agents as well as householders, and several properties can be quoted together. You can ring 0345 464 0079 or drop us an email with the details for a clear quote.
Do you guarantee sand mastic work?
All our work has a 12-month guarantee, and we’re fully insured.
How do I get a quote for sand mastic in Upper Upnor?
Every job is different, so each one gets its own quote. To get one, call 0345 464 0079 or drop us an email and let us know what needs doing and where.
Does someone need to be in?
That depends on where the joints are. Inside work needs someone to give us access, while outside work can sometimes be arranged differently.
Can I paint the new mastic?
The usual advice is to leave sand mastic unpainted. Ask us before you decorate around it and we will talk you through it.
Can I choose the sealant colour?
In most cases you can choose. We’ll explain which colours are available and agree one before work begins.
Is sand mastic better than silicone for my windows?
It depends on the window. Period windows in stone or brick generally suit sand mastic and newer frames generally get a flexible sealant.
Can I do it myself?
A DIY attempt doesn’t rule out a professional job. We remove it and do the joint properly, so just mention it when you contact us.
Some jobs are best left to a professional: high-level joints, fire-rated gaps, external movement joints and big jobs need the right product, the right access and the right method.
Windows and doors in Upper Upnor
Upper Upnor is within about 2 miles of the coast, where wind-driven rain is a fact of life and, nearer the shore, so is salt air. Both are hard on the mastic around older windows and doors, which can dry out and crack sooner where a building faces the weather. Rainfall in the South East is lower than in much of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
For site and facilities teams at buildings such as Wainscott Primary School, the mastic around its windows and doors needs looking after like any other building’s. Letting a property close to Strood station? Then older sash windows in a rental need their mastic kept sound to keep the weather out.
Upper Upnor is about 2 miles north-east of Rochester, in Medway. Homes, rented property, offices and hotels in Upper Upnor is covered for sand mastic. The work is guaranteed for a year. Our Medway coverage runs to 68 places, Upper Upnor among them. There’s also a page for Chelmsford, roughly 23 miles from Upper Upnor.
Here we cover the ME2 postcode area for sand mastic. If you need sand mastic at a property on High Street, Upnor Road and Castle Street or a nearby road, our applicators can take on the job. Close by, we work in Lower Upnor (1 mile north-east), Wainscott (1 mile north-west), Chattenden (1 mile north), Hoo St Werburgh (2 miles north-east) and Cooling Street (3 miles north). Within a short drive, we also cover Gillingham (3 miles south-east), Chatham (3 miles south), Rainham (5 miles south-east), Luton (3 miles south), Park Wood (5 miles south-east) and Lordswood (5 miles south).
Local landmarks in Upper Upnor
Typical jobs here are in homes near The Kings Arms, Lower Lines Park and Waterfront University Technical College and the streets around them. Nearby too are Former Ordnance Store At Chatham Gun Wharf (1.4 miles south) and Waterfront UTC (1.3 miles south-east). Upper Upnor’s nearest station is Strood station, about 1.2 miles south-west. Other landmarks nearby include French Hospital (1.5 miles south-west) and Pentagon Shopping Centre (1.6 miles south). Open spaces near Upper Upnor include Gad's Hill and Rede Common.