South East England and London
Sand Mastic in City of London
Wherever you are in City of London, we can help with sand mastic. A clear quote before we start, and a one-year guarantee.
Sand mastic in every part of City of London
Traditional burnt sand mastic around sash and case windows and doors in stone and brick. Choose your town from the list to see local details, and call or email us for a quick quote.
Biggest towns in City of London
What else we do in City of London
- Floor & skirting joints
- Fire-rated sealant
- External & façade joints
- Commercial & hotel sealant
- Bathroom & kitchen resealing
- Glazing & conservatory sealant
- Window & door mastic
- Remedial sealant & repairs
- New-build mastic & snagging
- Regrouting
- Gutter, fascia & soffit sealing
Postcodes in City of London
Sand mastic in City of London: how it works
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. We work on sash and case windows, brick reveals and stone surrounds, and people most often call us about mastic dropping out of the joint and gaps between timber frames and stone or brick.
We keep the work tidy and contained to the joints we are treating, so you can get on with your day. The job usually takes anything from a few hours to a full day, depending on how many windows, and we tell you how long to leave it before we go.
- First, we look at the surrounds with you and agree what needs doing.
- Old, loose mastic is raked out and the joint cleaned.
- Deep voids are packed so the mastic is the right thickness.
- We mix the sand mastic and apply it by hand, shaping it to the joint.
- The finish is dressed so it sits neatly against the stone or brick.
What you’ll pay
We don’t show prices on the website, because the cost depends so much on the job itself. For a quick quote, please ring 0345 464 0079 or drop us an email and we will talk you through it.
Why customers in City of London choose us
- Every job guaranteed for a year
- We leave the area clean and tidy
- Over 20 years’ experience
- Quality sealants from Arbo and Everbuild
Get a quote
Want a quote for sand mastic? Please phone 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.
Near you in City of London
We work in homes and buildings around Fashion Retail Academy, Prior Weston Primary School and Children's Centre and Barts Health Archives and the streets around them. Nearby too are Golden Fleece pub (under half a mile south), St Alphage Garden (less than half a mile north), Central Foundation Boys' School (0.8 miles north) and St Mary-at-Hill (0.5 miles south-east). City of London has its own railway station: London Cannon Street station. Well-known places in the area include Gabriel's Wharf (0.8 miles south-west) and London Mithraeum (less than half a mile south). Green spaces nearby include St. James's Park Lake and Barnsbury Wood.
- Churches close by include St Olave Old Jewry (within half a mile east)
Sand mastic across City of London: local notes
City of London has everything from older homes with timber frames to newer ones with uPVC. Walls facing the weather take the most punishment.
The South East is one of the drier parts of the UK, though outside sealant still needs a dry, clean joint, so work across City of London is planned around the weather.
City of London: Managing a site like Fashion Retail Academy? Then larger buildings have plenty of frames, and the mastic around each one ages. City of London is in London, so parking needs planning: tell us about permits, visitor bays or off-street space when you book.
DIY versus a professional finish
If you’re set on DIY, put the effort into preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it does not work out, we can still put it right.
The biggest DIY mistake is sealing over old sealant. New silicone will not bond to old, so it lifts and traps water and mould underneath. Everything old must be removed first.
What affects the quote in City of London
We do not publish a price list, because no two jobs are the same. What we look at:
- The size of the job
- The old material and how stubborn it is
- The product the joint needs
- Mould in or behind the old joints
Some things make a job bigger or smaller: how much old sealant there is and how stubborn it is, any mould to treat, and whether we need extra access for height. Your quote takes all of that into account.
Helping us quote
There’s no need for technical detail. Just tell us:
- What’s wrong with the joints now
- The address or postcode of the job
- A few pictures by email, if you can
- The type of property
We quote each job on its own, so start by telling us what you need. Simply ring 0345 464 0079 or email us and describe the job and send photos if you have them.
What we are called out for in City of London
Over the years, sand mastic weathers. It dries out, cracks and loses its grip from the frame or the masonry.
Common reasons people contact us are:
- Window mastic to renew ahead of painting
- Modern sealant on a period surround
- Draughty sash windows at the surround
- Cement or filler used on old window joints that has cracked
Aftercare tips
So the new joints stay in good condition:
- Sort the mastic before the decorators arrive
- Keep modern sealant off the mastic
- Ask a joiner to look at soft timber first
- Inspect the joints round the windows every year or so
When preparing windows for paint, take care around the mastic. It can be damaged by heavy scraping.
It’s best to renew mastic before painting the windows. Painting over failed mastic hides the problem for a while.
When something else is needed
In fairness, there are a few things sealant will not fix:
- Broken panes
- Sash cords, weights and draught-proofing of the sashes
- Masonry that needs repairing
Common questions in City of London
What exactly is sand mastic?
Sand plus a binder based on linseed oil. It’s applied by hand and finished to sit neatly against the masonry.
Can I choose the sealant colour?
We help you choose a colour that suits. The product needed can limit the range.
I rent my home. Can I book you?
We’re happy to deal with the tenant, landlord or agent. Just make sure your landlord agrees.
Can I paint the new mastic?
It’s traditionally left unpainted, as guidance on traditional windows advises. Ask us before decorating.
Do you hold any approvals?
Yes. We are an ARBOMaster approved applicator, which is run for the Arbo sealant brand.
Do you do commercial work?
Yes. We have worked for hotels, offices and other businesses.
Where are you based?
We are based in Crawley, West Sussex, and we cover South East England, London and all of Scotland.