South East England and London

Sand Mastic in Oxfordshire

From the largest town to the smallest village in Oxfordshire, our applicators can help with sand mastic. Clear quotes up front, and a one-year guarantee.

Call 0345 464 0079

Get a quick quote

Sand mastic in every part of Oxfordshire

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, or call or email us for a quick quote.

Main towns

Our sand mastic service in Oxfordshire

Fresh sand mastic forms a skin quite soon but full hardening takes longer. Traditional guidance is not to paint over it and we will advise if you are redecorating. We’re often asked to deal with gaps between timber frames and stone or brick and cement or filler used on old window joints that has cracked, on stone surrounds, sash and case windows and tenement windows.

At the end, we look at the finished work together. The work normally takes anything from a few hours to a full day, depending on how many windows, depending on the amount of work.

We look at the surrounds with you and agree the joints to renew.
We remove the old, loose mastic.
We pack any deep voids first.
The sand mastic is mixed and pressed into the joint by hand.
The surface is finished to suit the stone or brick.

What affects the price in Oxfordshire

Commercial jobs are quoted on the same basis as homes: how much there is to do, how we reach it and what it needs, plus any working-time requirements on site. Ask us for a quote and we’ll explain what it covers.

Why clients in Oxfordshire choose us

Full insurance on every job
Approved under the ARBOMaster scheme
180+ five-star Google reviews
Over 20 years’ experience

How to get a quote

We quote each job on its own, so the first step is telling us about yours. Simply phone 0345 464 0079 or email us and describe the job and send photos if you have them.

What’s near Oxford

We work in homes and buildings around Headington Rye Oxford, Alexander Library of Ornithology and South Park and the streets around them. Other local landmarks include East Oxford Primary School (under half a mile south-west), Cheney School (within half a mile east), The Star pub (within half a mile west) and St Clement's Church (within half a mile north-west). Oxford’s nearest station is Oxford station, roughly 1.6 miles west of the centre. Nearby you will also find Warneford Hospital (under half a mile east) and Rumble Museum (under half a mile east). For a walk, there’s CS Lewis Nature Reserve and Headington Hill.

Sand mastic across Oxfordshire: local notes

Oxfordshire has everything from older homes with timber frames to newer ones with uPVC. Exposed walls are where window sealant normally fails first, wherever they are in Oxfordshire.

Most of the South East has hard water, so limescale builds up on sealant, grout and fittings. For any job in Oxfordshire, joints are cleaned back properly before anything new goes in.

Oxford: Rented homes near Oxford station change hands often, and older sash windows in a rental need their mastic kept sound to keep the weather out. If you live in an older home near St Clement's Church, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall.

Leave it or put it right?

Before painting the windows, it pays to renew the mastic. Painting over failed mastic does not seal it, and the new mastic is traditionally left unpainted.

Questions to ask before booking

Whether all the old sealant comes out first
Whether you can choose the colour
How the joint is cleaned and prepared
How much experience the applicator has

DIY versus a professional finish

What a professional job adds is preparation and the right product. Joints are cleaned back to sound surfaces and dried, and the sealant is matched to the joint and its conditions.

The biggest DIY mistake is sealing over old sealant. New silicone will not bond to old, so it peels away and traps moisture behind it. All the old material has to come out first.

Looking after it afterwards

To keep the joints looking good and working properly:

Check with your local planning authority if your home is listed
Keep sills and gutters clear so water drains away
Sort the mastic before the decorators arrive
Get any rot dealt with first

Keep paint scrapers and sanders off the mastic when redecorating. It can be damaged by heavy scraping.

Fine cracks show the mastic is starting to fail. It’s easier to renew it before it drops out.

For landlords and businesses

We also work for property managers and facilities teams. Several sites can go on one quote, and we’re fully insured for the work.

From a single let to a portfolio, you get the same standard of work: the old material taken out, careful preparation and a 12-month guarantee.

Different surfaces, different methods

Period and listed homes

A traditional finish suits a period property.

Brick reveals

Loose mastic comes out and deep gaps are packed before the new mastic goes in.

Oxfordshire questions

Can I choose the sealant colour?

Most of the time, yes. We’ll explain which colours are available and agree one before work begins.

Can you do several jobs on one visit?

Yes. Several rooms, windows or areas can go on one quote.

Can landlords and businesses book you?

Yes, regularly. Several properties can be quoted together.

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.

Can sand mastic be painted?

The usual advice is to leave sand mastic unpainted. If you’re redecorating the window, ask us first and we will talk you through it.

Is it messy?

Very little: the area around the joints is protected first, and we tidy up before we go.

Do you remove the old sealant?

Yes, every time. New silicone doesn’t stick to old silicone, so any old material comes out before anything new goes in.