The Mastic Doctor team standing beside their branded vans outside an office building
Oxfordshire · England

Facade and window perimeter sealing in Hardwick, Oxfordshire

Facade joint and window perimeter sealing on commercial buildings in Hardwick and across Oxfordshire. CHAS accredited and fully insured, with a 12-month guarantee.

  • Weathered joints at frame-to-structure perimeters
  • Discoloured or dirty facade joints
  • Patch repairs that keep failing
1
Send details
Photos, drawings or a schedule, or we visit.
2
Get a quote
Scope agreed and priced before anything starts.
3
We seal
Prepared joints, the specified product, a tidy finish.
4
Guaranteed
12-month guarantee on our workmanship.
London, the South East & Scotland
CHAS & Constructionline
£5m public liability

Facade sealing in Hardwick

Share the site address and what’s failing, and we’ll reply with a fixed quote or arrange a visit.

About our facade sealing in Hardwick

Sealant around windows, doors and cladding panels stops rain reaching the wall behind. When a perimeter bead splits or peels, water finds its way behind frames and into the structure. We remove failed sealant and install a new bead chosen for the joint and how far it moves. We work on shopfront frames, stone and brick facade joints and window and door perimeters, and what we are called in for most is unsightly perimeter sealant on a visible elevation and sealant pulling away from frames or panels. Searching for sealant specialists in Hardwick? Mastic Doctor has worked for contractors, FMs and building owners since 2005.

Around smaller places like Hardwick, building work typically means conversions of farm buildings, a few new houses or an extension to a hall or school. Perimeters, facade joints and internal sealant all need doing properly, however small the scheme.

What our 12-month guarantee covers is the way we did the job: the preparation, the sealing and the tooling. Damage, later alterations by others and movement beyond what the joint was designed for sit outside it.

The Mastic Doctor team beside their liveried vans in front of an office building
Where
Hardwick (OX27)
Wider area
Oxfordshire
Cover
12 months on every job
Quote
Quoted before any work starts
Telephone
01277 525 020
Last updated
3 November 2026

Our process

Before we leave any area, the masking comes off, the area is cleaned and every joint is checked with your site contact. Where the sealant needs time to cure before use, we tell you and sign the area. Jobs in and around smaller places like Hardwick are normally planned as a single visit, so photographs and measurements up front really help. Then the right materials arrive with us.

  1. We start with photographs, drawings or a visit to see the joints and agree access.
  2. We confirm the joint type, movement and the specified product.
  3. The existing bead comes out in full and both faces cleaned back.
  4. Primer is applied where the maker specifies it.
  5. Backing rod is fitted and the new sealant gunned in and tooled.
  6. The finished joints are checked with you.

Getting the site ready

  • Tell us your opening times and when work is allowed
  • For older buildings, check the asbestos register before work
  • Have the specification and drawings to hand

Get a fixed quote

Photos, drawings or a schedule of the joints are often enough for a fixed quote. Where a site visit makes more sense, we’ll arrange one.

Ask for a quote

Advice

Why deal with it now?

Every shower drives water through a split perimeter bead. The damage builds out of sight: wet linings, rusting fixings, staining and spoiled finishes. Resealing early costs far less than repairing what the water reaches. Converted and older buildings near places like Hardwick tend to move, and aged sealant cracks. A sealant with the right movement capability, correctly sized, lasts far better.

The work involved drives the cost: stripping out, preparation, sealing, access and phasing. Call for a quote and we will explain how it’s made up.

Why choose Mastic Doctor in Hardwick

  • Standard and matched colours in many product ranges
  • Health and safety: CHAS accredited
  • Old sealant cut out, never sealed over
  • 12 months’ guarantee on every job

Read what affects the cost or our accreditations and insurance.

What sets the cost

Each job is priced on its own details. The main factors are:

  • Induction, permit and paperwork requirements
  • Whether the work must be split into stages
  • Any access equipment needed
  • Backing rod, priming and other preparation

Small jobs and large programmes are priced from the same things: what’s in scope, how we reach it, what’s specified and when it needs doing. Call for a quote and we’ll put a fixed figure on it.

Details that help us quote

A few photos plus some basic facts will normally do. It helps to include:

  • Any dates the work must fit around
  • What the building is and how it’s used
  • Anything awkward about access or site hours
  • A wide shot and a close-up of the area

A handful of photos and a postcode is the fastest way to a quote. Send them through the quote form, or call 01277 525 020 or use the quote form if you’d rather talk the job through.

Do you need facade sealing in Hardwick?

Product choice matters: acetoxy-cure silicone may mark stone or corrode certain metals, and an interior product won’t last outdoors. Most external joints call for a neutral-cure, facade-grade sealant.

Things that typically lead to an enquiry:

  • Cladding panel joints that have opened up
  • Cold air coming in at window perimeters
  • Discoloured or dirty facade joints
  • Weathered facade joints that have lost their grip

On a healthcare site such as Bicester Community Hospital, 4.6 miles to the south of Hardwick, new blocks and refurbishments go on while the hospital keeps running, so mastic work is sequenced carefully.

What to look for in a quote

  • Their public liability cover
  • How joint depth will be controlled
  • Will RAMS and insurance details be available?
  • Their plan for phasing and protecting the area

Our contractor checklist

Keeping the joints sound

Cleaning and maintenance staff play a part too. Share these points with them:

  • Keep sills, gutters and drainage paths clear
  • Insist on a full cut-out when joints are renewed
  • Investigate damp beside windows promptly
  • Ask about asbestos in pre-2000 mastic

Include facade joints in your planned maintenance inspections. Watch for splits, gaps at the edges, hardening and discolouration; note where they appear.

Use each reseal to correct the joint: the right width, backing rod and a sealant with enough movement capability. A well-designed joint lasts longer than a like-for-like copy of a failed one.

Questions we are asked in Hardwick

Would you work within a site like Bicester Community Hospital?

Yes. We work in healthcare settings as well as offices and schools. We follow the site’s permits, sign-in and infection-control procedures in every area.

Is Hardwick too far out for you?

No. Small places get the same service as large ones. We cover Greater London and the counties of the South East. Send photographs and a list of what needs doing, and we will plan the job to need as few trips as possible.

Can you handle several sites?

Yes. Several buildings can share a single quote, with one point of contact across South East England, Greater London and Scotland.

Are you CHAS accredited?

Yes. Mastic Doctor is CHAS accredited and a Constructionline member, which helps with supplier vetting.

How much does the work cost?

We don’t publish prices, because every site is different. Send photos or drawings and we will price it at a fixed figure.

Do you use silicone for external joints?

It depends on the joint, the substrate and any specification. Specifications often refer to BS EN 15651-1 for facade sealants or BS EN 15651-2 for glazing, and we work to what is specified.

Is old mastic on our building likely to contain asbestos?

In older non-domestic buildings, old sealant can contain asbestos. Check the asbestos register or survey before it is disturbed. Removal of asbestos isn’t something we do.

Commercial clients in Hardwick

We work for building owners and managing agents on sealant work across single buildings or whole portfolios. Several sites can go on one quote, which keeps the paperwork simple.

Facilities managers want contractors who arrive with the paperwork sorted. Let us know the documents you need (RAMS, insurance certificate, CSCS details) and we will confirm them with the quote.

Facades, frames and programmes in Hardwick

Rainfall across the South East, Hardwick included, is lower than in many parts of the UK. Still, external mastic needs dry faces within the maker’s temperature limits, which isn’t every day, which is why external dates are agreed with the site manager. Hardwick lies roughly 56 miles out from central London. Towns within reach of London tend to keep building, from flats to offices and schools, and each scheme needs its mastic sealed to programme.

New units and refits on sites such as Baynards Green Trading Estate, 1.8 miles west of Hardwick, need their panel and perimeter joints sealed to the specification.

Hardwick is about 4 miles north of Bicester, in Oxfordshire. Businesses, contractors and managing agents in Hardwick use us for work on facade joints. 423 places across Oxfordshire fall within our area, Hardwick among them. Oxford is covered too, around 15 miles from Hardwick.

Business premises anywhere in OX27 are within our area. Close to Hardwick, our area also takes in Hethe (1 mile east), Stoke Lyne (1 mile south-west), Fringford (2 miles east), Bucknell (3 miles south-west) and Stratton Audley (3 miles south-east). Nearby towns on our patch include Oxford (15 miles south), Banbury (10 miles north-west), Bicester (4 miles south), Kidlington (11 miles south-west), Headington Quarry (14 miles south) and Bure Park (4 miles south).

Near you in Hardwick

In Hardwick, that means premises near Whitmore Arms Public House and the streets around them. The closest station to Hardwick is Bicester North station, roughly 4.2 miles south. Well-known places in the area include Ardley Castle (2.8 miles south-west) and Bicester Community Hospital (4.6 miles south).

Map of Hardwick © OpenStreetMap contributors
Accreditations

Trusted. Accredited. Insured.