South East England and London

External Mastic in Oxfordshire

Wherever you are in Oxfordshire, our applicators can help with external mastic. A clear quote before we start, and a one-year guarantee.

Need external mastic in Oxfordshire?

Call 0345 464 0079

Get a quick quote

External mastic across Oxfordshire

Sealing brickwork movement joints, render, cladding and façade joints. Pick your town below to see the details for your area, or call or email us for a quick quote.

Main towns

Other services in Oxfordshire

Postcodes in Oxfordshire

About external mastic in Oxfordshire

We cut out failed sealant, set the joint depth with closed-cell backing rod and reseal with a low-modulus exterior sealant. We pick a colour that sits well with the wall. We work on copings & trims, joints between brick and frames and brickwork movement joints, and common reasons people get in touch are failed sealant between panels on a façade and gaps where render, brick and frames meet.

You do not need to clear the whole room or building, just the space around the work. We protect the rest, and the work takes a few hours for a handful of joints, longer for a whole elevation in most cases.

We start by checking each joint, agreeing the ones to redo and how we’ll reach them.
Old sealant and any debris are cut and raked out.
The joint faces are cleaned and primed where the sealant needs it.
Closed-cell backing rod is fitted to set the depth and stop three-sided bonding.
The new sealant, chosen to suit the brick or render, is applied and tooled to a neat finish.

Pricing in Oxfordshire

What you pay reflects the work, not a rough estimate. That’s why we ask about the job first and send you a clear quote before work begins.

Why customers in Oxfordshire choose us

A choice of colours where the product allows
A sealant colour to suit the surroundings
Old sealant always removed completely
We agree the colour with you first

Ask for a quote

We don’t publish a price list, as no two jobs are quite the same. Instead, your job gets its own clear quote. To arrange one, ring 0345 464 0079 or send us an email.

Around Oxford

Locally, jobs take us to homes and businesses close to Headington Rye Oxford, Alexander Library of Ornithology and South Park, among other places. Also close by are East Oxford Primary School (less than 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 (less than half a mile north-west). The closest station to Oxford is Oxford station, roughly 1.6 miles west. Well-known places in the area include Warneford Hospital (within half a mile east) and Rumble Museum (under half a mile east). Green spaces nearby include CS Lewis Nature Reserve and Headington Hill.

External mastic across Oxfordshire: local notes

Oxfordshire has everything from period brickwork to rendered and clad modern buildings. Where two materials meet is where water generally gets in, wherever the building is in Oxfordshire.

The South East is one of the drier parts of the UK, though outside sealant still needs a dry, clean joint, so work across Oxfordshire is planned around the weather.

Oxford: For an older house near a landmark such as St Clement's Church, old and new materials meet at the roofline and walls, which is where sealant earns its keep. Schools such as East Oxford Primary School are buildings too, and larger buildings have long runs of movement joint that eventually need resealing.

For landlords and businesses

Water getting past a failed joint can damage the building, which is a bigger problem in a rented property. Keeping joints in good order is simple maintenance that we can handle for you.

Housing providers, facilities teams and property managers book us too across Oxfordshire. Several sites can be quoted together, and we are fully insured for the work.

Signs you need external mastic

Using the wrong sealant is another common reason. A stiff, general-purpose sealant can’t cope with a joint that moves a lot, and it tears off the sides.

Keep an eye out for any of the following:

Cracked joints where brick meets render or frames
Joints pointed up with cement by mistake
Water getting into walls through failed joints
Joints where the bead has come unstuck

Different surfaces, different methods

Concrete and blockwork

The face of concrete or block is often dusty, so cleaning and priming matter. We prime where the sealant needs it.

Joints between dissimilar materials

Different materials may need different primers. Both surfaces are cleaned and primed as the product requires.

Why act early?

Running new sealant over the old bead rarely lasts. The new layer cannot bond properly to old, weathered material, so we always take the old sealant out.

Comparing quotes

Whether they’re fully insured
What happens if the job turns out different
Whether they seal over old material or remove it
Whether you can choose the colour

How to look after the new joints

Aftercare is simple:

Never let anyone fill a movement joint with mortar
Keep soil, plants and ivy away from the joints
Ask before painting over external sealant
Walk round the building once a year and look at the joints

Have a quick look at the joints each spring. Watch for splits, edges coming away or growth in the joint.

Leave a failed movement joint and water keeps getting into the wall. Over time it can mean damp inside, stained render or frost-damaged brick which cost more to put right than the joint.

FAQs for Oxfordshire

Do you take out the old sealant first?

Yes, every time. New sealant will not bond properly to old, so the joint is cleaned back first.

Do you have insurance?

Yes. We’re fully insured, with over 20 years’ experience in sealant work.

Should I point up the gap in my brickwork?

No. Cement or mortar can’t stretch, so the joint stops doing its job. Where a joint has been mortared, it can often be raked out and sealed properly.

Will the new joint stand out?

The aim is a neat, even joint in a colour that suits the wall. Colour is agreed with you before we begin from the range available.

I rent my home. Can I book you?

Yes, though it’s best to check with your landlord first. Many landlords are glad to have it sorted.

Do you work for letting agents?

Yes. We work for homeowners, landlords, letting agents, businesses and hotels in Oxfordshire.