Mastic Sealing in Steventon
Mastic sealing for building owners, managing agents and housing associations in Steventon. CHAS accredited, Constructionline member, with a 12-month guarantee on workmanship.
- Movement joints with sealant missing
- Draught complaints from residents or tenants
- Patchy repairs in mismatched sealant
Mastic sealing near Steventon
Send drawings, photos or a joint schedule, or tell us about the site, and we’ll come back with a fixed quote.
Diagnose, treat, sign off
Before we leave any area, we remove the tape, clean down and inspect every joint. Where the sealant needs time to cure before use, we tell you and sign the area. For work around Steventon, we aim to finish in one visit, so we ask for photographs and rough sizes first. That way the right products come on the day.
- We inspect each building and record the joints that have failed.
- You get a fixed quote, per block or for the whole programme.
- We agree the programme and dates with you.
- Old mastic is removed and the joint faces prepared.
- New sealant goes in with backing rod and primer where needed.
- Each building is checked and signed off with the 12-month guarantee.
Before we start on site
- Move anything stored against the joints
- Point out any areas we must not close
- Arrange parking or a loading space
Quotes
A handful of photos and a postcode is the fastest way to a quote. Upload them with the quote form, or ring 01277 525 020 or email the details over if you’d rather talk the job through.
Read more
Mastic sealing in Steventon, done properly
We work for building owners, landlords with commercial or block portfolios, managing agents and housing associations. Many prefer a planned programme to one-off visits and we quote and schedule each building in turn. We work on communal kitchens and washrooms, shopfronts below residential blocks and external wall and movement joints, and the failures we’re asked to look at most are window mastic that has split and shrunk and no planned programme for sealant. For commercial sealant work in Steventon, you deal with one contact from quote to sign-off, whether it’s one building or several.
In and around smaller places like Steventon, landlords and agents often look after small groups of housing association properties, converted farm buildings and community buildings. Mastic around frames and on external joints wears out in time, whatever the building.
The 12-month guarantee is for workmanship rather than wear and tear. How long a sealant joint lasts depends on movement, exposure, cleaning and use, so we’re clear about what is covered before work starts.
- Where
- Steventon (OX13)
- Region
- Oxfordshire
- Cover
- 12 months on every job
- Quote
- Quoted before any work starts
- Call
- 01277 525 020
- Last updated
- 3 November 2026
Common questions from Steventon clients
Is The Core Business Centre, near Steventon, within your area?
Yes. Our area takes in Steventon and its surroundings, with estates and business parks such as The Core Business Centre included. To start, just speak to us on 01277 525 020 or use the quote form with the unit, the joints involved and your access times.
Will you take on a block within reach of Didcot Parkway station?
Yes, we work for agents, landlords and housing associations with blocks of every size. Give us the building’s details and say how residents are notified, and we’ll quote and plan to suit.
Is asbestos a concern with old mastic?
In older buildings, old mastic can contain asbestos. We ask for the asbestos register or survey before work starts and suspect material is tested first.
What about access for upper-floor joints?
Every block is different. We agree access with you at quote stage so the fixed quote reflects it.
Who decides which product is used?
Where there’s a specification, we use the product it names. Otherwise, we recommend a product to suit the joint’s movement, the substrate and the conditions, following the manufacturer’s guidance.
Does the weather affect the work?
Outside, yes. The joint has to be dry and within the product’s temperature range, so damp, frosty or very cold days can stop external work. Inside work is seldom held up.
How long does a typical visit take?
That varies with the scale of the job, but the work usually takes anything from a day to a few weeks, depending on the number of buildings and joints. For bigger or phased jobs, we will set out a timescale with the quote.
What we can’t put right
Being straight saves everyone time. New sealant won’t cure:
- Failed window or door frames, which need a window contractor
- Substrate edges that need repairing first
- Misted or failed double-glazed units
If you’re not sure, just call 01277 525 020 or email a schedule or drawings and we will give you a straight answer before you book.
Surfaces we seal
- Window and door perimeters on blocks
- Shopfronts below residential blocks
- Balcony and threshold joints
- External wall and movement joints
- Communal entrances and stairwells
- Communal kitchens and washrooms
Looking after buildings in and around Steventon
Central London is about 54 miles from Steventon. Commuter-belt towns tend to have plenty of managed blocks near stations and town centres. Steventon sits in one of the drier corners of the country, the South East. Outside work still depends on dry joints, and elevations facing the sun and the prevailing weather are usually where frame mastic ages first.
Schools and community buildings such as St Michael's Church of England Primary School need frame and external mastic kept sound like any building. If you own or manage units on a site such as The Core Business Centre, which lies south-east of Steventon, failed mastic on frames, door surrounds and external joints can be dealt with unit by unit.
Steventon is about 3 miles west of Didcot, in Oxfordshire. We send applicators to Steventon for mastic joints. 423 places across Oxfordshire fall within our area, including Steventon. There’s a separate page for Oxford, roughly 10 miles from Steventon.
Postcode districts covered here: OX13. Buildings on High Street, St Michael's Way and Hanney Road are within our area. Sites close to Steventon are covered too, including Milton Heights (1 mile south-east), Milton Hill (1 mile south-east), Drayton (2 miles north), Sutton Wick (2 miles north-east) and Marcham (3 miles north). Further afield, our area takes in Oxford (10 miles north-east), Didcot (3 miles east), Abingdon-on-Thames (4 miles north-east), Witney (13 miles north-west), Carterton (15 miles north-west) and Wantage (5 miles south-west).
What’s near Steventon
Around Steventon, our work takes us to commercial buildings near The North Star Public House. The closest station to Steventon is Didcot Parkway station, about 3.6 miles east of the centre. Well-known places in the area include FitzHarris Castle (3.9 miles north-east) and Atlas Computer Laboratory (3.5 miles south). For a walk, there’s Chain Hill and Mowbray Fields.
When to call us in Steventon
UV and rain age external sealant. The surface chalks, the body stiffens and cracks appear most of all on the sunniest and most exposed elevations.
Common reasons buildings call us in:
- Mastic failing across several blocks on an estate
- Occupiers reporting cold air round windows
- Leaks at window and door perimeters
- No planned programme for sealant
If you are responsible for a building such as Church of St Michael and All Angels, frame and door mastic needs the same attention as any other property.
What to look for in a quote
- Proof of insurance
- Health and safety accreditation such as CHAS
- How the joint faces will be prepared and primed
- The named product and why it was chosen
Why act early in Steventon
Leaving failed external joints lets water reach the structure behind. Damp patches, stained plaster and decorating claims can follow, which is harder to deal with than resealing. Older rural buildings around Steventon move with the seasons, and rigid or tired sealant can’t keep up. The right product, sized to the joint, copes much better.
The price depends on the quantity of joints, what has to come out first and the access. Call for a fixed quote once you have the details.
Why us?
- Failed material removed, not covered up
- CSCS-carded applicators
- Fully insured
- A fixed quote before work starts
Take a look at what affects the cost or how we’re accredited.
Towns and villages near Steventon
Other services in Steventon
General trades versus a specialist
There’s also the paperwork. Main contractors and clients often ask for CSCS cards, RAMS and insurance details, and our CSCS-carded applicators are used to working under those rules.
Site maintenance staff can often handle a short internal joint. The usual problems come from preparation: sealing over old material, sealing onto damp or dusty surfaces, or a product that can’t take the movement.
Keeping the joints sound
Regular inspection catches problems early. Specifically:
- Encourage occupiers to report problems at frames
- Reduce knocks to communal area joints
- Check the asbestos register before any old mastic is disturbed
- Check sealant joints during planned building inspections
Where a paintable product was specified, it can be painted after curing. Silicone usually can’t be painted, so keep decorators off it unless told otherwise.
Left open, joint edges in render, brick or frames can deteriorate. Once that happens, repairs come before resealing and the job grows.