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

Construction and new-build mastic in Lee Common, Buckinghamshire

Mastic packages for new-build and refurbishment projects in Lee Common and across Buckinghamshire. CHAS accredited, Constructionline member, with a 12-month guarantee on workmanship.

  • Failed sealant in an existing building being refurbished
  • A long mastic snag list close to completion
  • Oversized or tapered gaps around new frames
1
Send details
Send the specification, photos or a marked-up plan.
2
Get a quote
A fixed price, with what’s included set out clearly.
3
We seal
The right sealant, to the right depth, neatly finished.
4
Guaranteed
Signed off, with 12 months’ guarantee.
Covering the South East & Scotland
CHAS & Constructionline
£5m PL insurance

Construction mastic for Lee Common sites

Photos, a specification or a quick description of the joints is enough to start a fixed quote.

Why deal with it now?

When a package runs over budget, downgrading the product is a common first thought. A failed joint in the defects period costs far more than the product difference, especially externally. We price the specified product and will tell you plainly where an alternative would or wouldn’t work. Converted and older buildings near places like Lee Common tend to move, and aged sealant cracks. A sealant with the right movement capability, correctly sized, lasts far better.

The specified product makes a difference, as does the preparation each joint needs, such as cutting out, priming or new backing rod. Access, phasing and site requirements come into it too.

Why us?

  • Workmanship guaranteed for 12 months
  • Joints cleaned back to sound surfaces
  • A fixed quote before work starts
  • Constructionline member

Take a look at how commercial sealant jobs are priced and how we’re accredited.

How we handle construction mastic in Lee Common

On refurbishments, the mastic package typically includes cutting out old sealant as well as sealing new work. Old beads come out completely, as fresh silicone can’t grip old, and on older buildings we ask for the asbestos survey before disturbing anything. After that, the joints are prepared and sealed to the specification. We work on sanitary and kitchen joints, floor and skirting junctions and window and door perimeters, and the usual reasons a site gets in touch are caulk cracking where joints are moving more than expected and frame perimeters left unsealed or poorly sealed. Facilities teams, main contractors and managing agents in Lee Common tend to want the same three things: a fixed quote, no surprises on site and a 12-month guarantee behind the result.

Construction in and around smaller places such as Lee Common is often barn conversions, small groups of houses or extensions to halls and schools. Each still needs a proper mastic package: window perimeters, facade joints and internal sealant to the specification.

Our 12-month guarantee is about workmanship, not wear and tear. How long a sealant joint lasts depends on movement, exposure, cleaning and use, so we are clear about what is covered before work starts.

The Mastic Doctor team beside their liveried vans in front of an office building
Location
Lee Common (HP16)
Wider area
Buckinghamshire
Cover
A 12-month guarantee
Quote
Quoted before any work starts
Call
01277 525 020
Last updated
3 November 2026

Doing it in-house

Redoing a failed joint usually costs more than getting it right at the outset, since all of it has to come out and the faces be cleaned back again. For that reason, many FMs and contractors use a sealant specialist from the outset.

For a quick touch-up, site staff may be fine, but larger jobs are different: a specialist brings efficiency, a consistent finish and a 12-month guarantee.

Surface by surface

External facade and movement joints

Movement joints in the facade are sealed with a product suited to the expected movement. We set the depth with backing rod to avoid three-sided adhesion.

Fire-rated sealant where specified

Fire-rated sealant forms part of some packages, installed to the product’s tested detail where it is specified. The design and sign-off of fire stopping sit with the designer, principal designer or fire engineer; we work to the specification and the manufacturer’s installation guidance.

For managing agents and facilities managers

For main contractors, we work as the sealant subcontractor on new-build and refurbishment projects. Programme, specification and site rules come first, with CSCS-carded applicators on site.

Planned maintenance programmes are welcome: resealing failed joints building by building, on a schedule that suits your budget. Lee Common can form part of a wider programme.

FAQs: Lee Common

Is Lee Common too small for you to travel to?

Not at all: smaller places are covered as well as towns. Our area covers London and the South East counties. Where we can, we group nearby jobs to make the most of each trip.

Could you schedule work at a campus like Buckinghamshire New University for the vacation?

Yes. Education sites normally want the work in vacations or in phases during term, and we plan to suit. We are CHAS accredited and a Constructionline member, and paperwork such as RAMS is confirmed with the quote.

What about RAMS and site documents?

Requirements differ from site to site, so list what you need, whether RAMS, insurance or CSCS details, and we’ll confirm with the quote.

Can you work plot by plot or floor by floor?

Our work is sequenced around the programme. Areas are sealed as they’re released by the site team and we tell you if something stops an area being sealed.

Can you work to our specification?

Yes. We follow the specification, along with the manufacturer’s installation guidance.

Do you install fire-rated sealant as part of a package?

Where the specification calls for fire-rated or intumescent sealant around service penetrations or linear gaps, we install it to the manufacturer’s tested details. The design and sign-off belong to the designer, fire engineer or building control.

What does a mastic package normally include?

It depends on the specification, but frames, sanitary, kitchens, caulk where specified and snagging are typical.

Mastic packages on Lee Common sites

Lee Common is in the South East, one of the UK’s drier regions. Even so, frost and condensation on steel and glass are common on winter mornings, so external mastic is timed for workable conditions and agreed with the site manager. Lee Common lies roughly 30 miles out from central London. Construction around the commuter belt mixes station-side flats with refurbished offices and units, so mastic packages have to keep pace with busy programmes.

When a school such as Lee Common Church of England School is extended or refurbished, the mastic package is often squeezed into the holidays. For a contractor working at a hospital such as The Chiltern Hospital (2.7 miles south of Lee Common), perimeter and facade sealing is planned around patients and deliveries. University estates such as Buckinghamshire New University (to the south-east of Lee Common) tend to have a rolling programme of new buildings and refurbishments, each with window perimeters and facade joints to seal.

Lee Common is about 3 miles west of Chesham, in Buckinghamshire. Our applicators travel to Lee Common for work on mastic packages. We work across 308 places in Buckinghamshire, large and small. For work in that direction, see our Reading page, about 23 miles away.

Work on mastic packages is covered throughout HP16, whatever the building. If your site is on Oxford Street, Prince's Lane and Cherry Tree Lane or close by, we can quote for mastic packages. If your building is just outside Lee Common, we cover Ballinger Common (1 mile south-east), Swan Bottom (1 mile north-west), South Heath (1 mile south), Chartridge (2 miles east) and St Leonards (2 miles north). Further afield, our area takes in Aylesbury (8 miles north-west), High Wycombe (7 miles south), Chesham (3 miles east), Marlow (11 miles south), Amersham (5 miles south-east) and Beaconsfield (8 miles south).

Landmarks near Lee Common

Locally, jobs take us to sites close to Misbourne School and The Bugle pub and the streets around them. The closest station to Lee Common is Great Missenden station, roughly 2 miles south-west. Nearby you’ll also find Chiltern Hospital (2.7 miles south) and Roald Dahl Museum and Story Centre (2 miles south-west). Open spaces near Lee Common include Sands Bank and Pavis Wood.

Map of Lee Common © OpenStreetMap contributors

From enquiry to sign-off

Site rules come first: signing in, inductions and any permit to work. Once we are cleared to begin, the joints are worked through in the order agreed with your site contact, and each area is checked before we leave it. Jobs in and around smaller places like Lee Common are usually planned as a single visit, so we ask for photographs and rough sizes first. That way the right products come on the day.

  1. Drawings, the sealant specification and your programme come to us for pricing.
  2. We return a fixed quote that ties the mastic package to your programme.
  3. Any site paperwork you need (RAMS, insurance certificate, CSCS details) is confirmed with the quote.
  4. We seal each plot or floor as it’s released to us.
  5. Every joint is prepared, set to depth and sealed with the specified product.
  6. Before handover, snags are dealt with and the package is signed off under our 12-month guarantee.

Preparing the site

  • Tell us which areas need to stay in use
  • Tell staff and tenants when we will be in
  • Send asbestos survey details if the building is pre-2000

Getting a fixed quote

If there’s a specification, drawings or a tender package, send it with your enquiry, and we will price the work to it. Smaller jobs need nothing more than photographs and a few notes.

Get a quick quote

Related advice

How the quote is worked out

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

  • How accessible the joints are
  • Joint width, depth and condition
  • Whether the work must be split into stages
  • How much existing material needs removing

Small jobs and large programmes are priced from the same things: scope, access, product and programme. Call for a quote, and you will have a fixed figure to work with.

What to include in your enquiry

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

  • Photos of the joints, close up and from further back
  • The type of building and who uses it
  • Access details, including height
  • Whether an asbestos survey exists

Every job follows the same four steps: send details, get a quote, we seal, guaranteed. To take the first step, phone 01277 525 020 or email drawings and photos.

Accreditations

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