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

Sealant specialists in Sedrup

We carry out sealant work for offices, shops, hotels and other commercial buildings in Sedrup. Send details for a fixed quote.

  • Sanitary sealant that has gone black and patchy
  • Movement joints packed with grit and debris
  • Greasy, split joints in a kitchen or tea point
1
Send details
Photos, drawings or a schedule, or we visit.
2
Get a quote
A fixed price, with what’s included set out clearly.
3
We seal
CSCS-carded applicators, the right product for each joint.
4
Guaranteed
12-month guarantee on our workmanship.
South East, London & Scotland
CHAS & Constructionline
Fully insured: £5m PL

Commercial sealant contractors for Sedrup sites

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

What sealant work can’t fix

A few problems need another trade or a different fix, and we say so rather than covering them up:

  • Walls or slabs moving more than any sealant can take
  • Removing asbestos-containing materials (a licensed or specialist contractor’s job)
  • Broken glass or blown double-glazed units

If in doubt, give us a call on 01277 525 020 or email a schedule or drawings and we’ll say what we think before you book.

Where we work in Sedrup

  • External facade joints
  • Floor and threshold joints
  • Washrooms and tea points
  • Movement joints in walls and floors
  • Kitchen worktops and splashbacks
  • Window and door perimeters

Sealant applicators in Sedrup

Failed sealant isn’t always the whole story. A leak near a frame edge can start in the frame, the cill or the cavity. Part of the job is telling you when the fix is something other than sealant, so budgets go where they’ll do some good. If you have untidy joints in a reception, shop floor or lobby and frame mastic that has hardened and come away from the wall, we can help. For commercial sealant work in Sedrup, you deal with one contact from quote to sign-off, whether it’s one building or several.

A lot of what we do in Sedrup is replacing sealant that has done its years: hardened, cracked or shrunk away from the faces, and letting water or dirt in.

Work in smaller places such as Sedrup tends to come one building at a time: a pub kitchen, a hall, a small office. We’ll want a full list and photographs first, so the right products come on the day and nothing waits for a second trip.

We stand behind the joints we seal with a 12-month guarantee. That covers our preparation and application, and we come back if anything isn’t right.

Place
Sedrup (HP17)
Wider area
Buckinghamshire
Guarantee
12 months on every job
Quote
A fixed quote before we start
Call
01277 525 020
Updated
3 November 2026
The Mastic Doctor team beside their liveried vans in front of an office building

Why deal with it now?

Fixing joints complaint by complaint is a costly way to manage sealant. Planning the work across a year or a portfolio means fewer separate visits and a predictable spend. We can help you prioritise, starting with the joints most likely to let water in. Halls, stores and units around places like Sedrup may not be checked every day, so a failed joint can leak for a while before anyone sees it. Renewing joints in good time avoids the problem.

Access can matter as much as the joints themselves: joints within easy reach take less time than ones that need access equipment. Mention the access as part of your enquiry.

Why us?

  • Specification-led, product-correct work
  • Fixed quotes based on photographs, drawings or a visit
  • Health and safety: CHAS accredited
  • Coloured sealants to suit the setting, where available

Read what affects the cost and our accreditations and insurance.

What we are called out for in Sedrup

Outside, sunlight and rain wear sealant down year after year. Sunny elevations dry the surface out and exposed ones take driving rain, so beads chalk, stiffen and lose their stretch. A hardened bead can’t follow the building any more.

Things that normally lead to an enquiry:

  • Sanitary sealant that has gone black and patchy
  • External beads that have gone brittle and cracked
  • Layers of sealant, all of them failing
  • Shrunken sealant along kitchen worktops and splashbacks

For tenants and agents on sites such as Fountain Business Centre (1.7 miles east of Sedrup), office fit-outs, reception joints and window perimeters are the usual sealant work.

Before you book anyone

  • Health and safety accreditation such as CHAS
  • Will CSCS-carded applicators be on site?
  • The terms of the workmanship guarantee
  • Their public liability cover

Our contractor checklist

Surface by surface

Fire-rated seals where specified

Intumescent and other fire-rated sealants go in at service penetrations and linear gaps to the maker’s tested details, where they are specified. Fire-stopping design and sign-off sit with the designer, fire engineer or building control.

Shop fronts and retail fit-outs

Most shops can’t close for a reseal. Tell us your trading hours and access windows and we will plan around them, working in sections where that helps.

Our process

Site rules come first: signing in, inductions and any permit to work. With the paperwork done, the joints are worked through in the order agreed with your site contact. For work around Sedrup, we aim to finish in one visit, so photographs and measurements up front really help. Then the right materials arrive with us.

  1. We begin with whatever information you have, whether that’s photographs, a drawing or a list of locations, and a site visit is booked where it helps.
  2. Next comes a diagnosis and a fixed quote.
  3. Site hours, access windows and the order of areas are agreed before we start.
  4. The failed bead is removed and the joint faces cleaned until they’re sound and dry.
  5. Backing and primer go in where needed, then the chosen sealant is applied and tooled.
  6. Finished joints are checked with you and handed over with our 12-month guarantee.

What we need from you

  • Tell us your opening times and when work is allowed
  • Tell us what induction or permit system the site runs
  • Share the asbestos register for older buildings

Quotes

Send us photos, drawings or a joint schedule are often enough for a fixed quote. Where a site visit makes more sense, we will arrange one.

Get a price

Related advice

Sedrup: questions and answers

Must a hotel around Sedrup close while you work?

Almost never. The work is phased so most rooms stay available. Tell us your quiet periods and access windows and we’ll plan around them.

Is Sedrup too small for you to travel to?

No. Places such as Sedrup are covered as much as the big towns. We work across Greater London and the South East. Good photos up front let us bring everything on the first visit.

Can one contractor look after sealant on all our buildings?

Yes, within the areas we cover: South East England, Greater London and Scotland. Each site gets the same process and a single contact.

What about asbestos in old mastic?

In buildings from before 2000 in particular, some old mastics and sealants may contain asbestos. Before cutting anything out, we ask for the asbestos register or survey, and anything suspect is left until it has been tested.

Who decides which product is used?

Where there’s a specification, we use the product it names. If not, we choose for the movement, the surfaces and the conditions, in line with the manufacturer’s guidance.

Do you seal on top of existing sealant?

No. Failed sealant is removed and the faces cleaned back to sound, dry material first, because fresh silicone will not bond with aged silicone.

Is failed sealant stripped out, or sealed over?

The old bead is stripped out first. After that come cleaning, primer where needed, backing and the new sealant.

What Sedrup’s businesses ask us to seal

The 3 miles around Sedrup take in at least three named trading estates, business parks or retail parks. Tenant changes on such sites bring fit-outs, and fit-outs bring new joints. Sedrup lies roughly 38 miles out from central London. The South East around the capital has large numbers of business parks, offices and retail centres, especially around the motorway corridors. Occupiers with several premises in the region tend to prefer one contractor and one point of contact.

Shops and cafés around stations like Aylesbury station (1.7 miles north-east of Sedrup) trade from early, so work is timed around them. A business with units at Fountain Business Centre and Broadfields Retail Park needn’t use two contractors for its sealant.

Sedrup is about 2 miles south-west of Aylesbury, in Buckinghamshire. Businesses, contractors and managing agents in Sedrup use us for work on sealant joints, as part of our coverage of Buckinghamshire. Across Buckinghamshire, 308 places are covered, Sedrup among them. Oxford is covered too, some 17 miles away.

Business premises anywhere in HP17 are within our area for sealant joints. Sites close to Sedrup are covered too, including Bishopstone (1 mile south), Walton Court (1 mile east), Upton (2 miles west), Ford (2 miles south-west) and Dinton (2 miles west). Further afield, our area takes in High Wycombe (12 miles south), Chesham (11 miles south-east), Buckingham (15 miles north-west), Amersham (13 miles south-east), Beaconsfield (15 miles south-east) and Elmhurst (3 miles north-east).

Local landmarks in Sedrup

We work on buildings around The Harrow pub, The Mandeville School and Pebble Brook School, among other places. The closest station to Sedrup is Aylesbury station, roughly 1.7 miles north-east. Well-known places in the area include Dinton Castle (2.1 miles west) and Friars Square (1.8 miles north-east). Open spaces near Sedrup include Beacon Hill and Snakemoor.

Map of Sedrup © OpenStreetMap contributors

Owners, agents and contractors

FMs need a contractor who is easy to get on site. Let us know the documents you need (RAMS, insurance certificate, CSCS details) and we’ll confirm them with the quote.

We take on planned maintenance as well as one-off repairs: working through a building or an estate in stages that fit your budget. Sedrup can form part of a wider programme across Buckinghamshire.

Accreditations

Trusted. Accredited. Insured.