Construction Mastic in Mortimer
Construction mastic for Mortimer, from a contractor working since 2005. Fully insured, with a 12-month guarantee.
- New external sealant already peeling away
- Sanitary sealant damaged by following trades
- Internal caulk splitting as the building dries out
Construction mastic for businesses in Mortimer
Tell us what needs sealing and where, with photos or drawings if you have them, and we’ll price it.
Construction mastic in Mortimer, done properly
On refurbishments, the mastic package typically includes cutting out old sealant as well as sealing new work. Existing joints have to be stripped back to sound faces, because fresh sealant can’t key into cured silicone and the asbestos survey is checked first on older stock. After that, the joints are prepared and sealed to the specification. If you are dealing with new external sealant already peeling away and frame gaps too wide for sealant alone, we can help. Searching for sealant specialists in Mortimer? Mastic Doctor has worked for contractors, FMs and building owners since 2005, CHAS accredited and a Constructionline member.
Conversions around smaller places like Mortimer often join new frames to old masonry or timber, and the sealant at those junctions has to cope with two materials that move differently, in a colour the planners or architect are happy with.
A 12-month guarantee applies to all our work in West Berkshire. Should something we installed fail, call 01277 525 020 or email drawings and photos and we’ll come back to it.
- Place
- Mortimer (RG7)
- Wider area
- West Berkshire
- Cover
- 12 months on every job
- Quotes
- A fixed quote before we start
- Phone
- 01277 525 020
- Last updated
- 3 November 2026
Diagnose, treat, sign off
Tell us your site hours and access windows and we will plan around them. While we’re working, the area stays contained and tidy, and your contact hears from us before we move to the next area. Several jobs near Mortimer can be grouped on one trip. Tell us your site hours and we’ll plan around them.
- First we look at the scope on site or from drawings.
- You receive a fixed quote covering scope, products and sequence.
- Site paperwork is confirmed and our CSCS-carded applicators are inducted.
- Sealing follows the programme as areas are released.
- Problems we find, such as oversized gaps, are raised right away.
- The package is closed out, snags cleared and backed by our 12-month guarantee.
What we need from you
- Arrange parking or a loading space
- Confirm the product named in the specification
- For older buildings, check the asbestos register before work
Request a quote
Every job follows the same four steps: send details, get a quote, we seal, guaranteed. To take the first step, call 01277 525 020 or send details through our quote form.
Advice
When it isn’t the sealant
Sealant solves a lot, but not everything, and we’d rather tell you before you spend money. These need a different solution:
- Fire-stopping design or sign-off (that’s for the designer, fire engineer and building control)
- Specifying the product where the designer hasn’t
- Rework caused by others damaging completed areas
Not sure which it is? You can call the office on 01277 525 020 or send details through our quote form and we’ll tell you honestly.
Surfaces we seal
- Internal decorators’ caulk
- Floor and skirting junctions
- Cladding and panel joints
- Brick and block movement joints
- Window and door perimeters
- Sanitary and kitchen joints
How the job changes by surface
Internal decorators’ caulk
Where the specification calls for it, acrylic decorators’ caulk goes on non-moving internal gaps before painting. It’s paintable and suits gaps that don’t move, and we use a flexible sealant where there’s movement.
Fire-rated sealant where specified
Fire-rated sealant is one type of fire-stopping product. Collars, wraps, batts and boards are specified for other services so we will flag where the detail needs something different. Record requirements are agreed with the quote.
Building and refurbishing in Mortimer
Central London is about 43 miles from Mortimer. Towns within reach of London tend to keep building, from flats to offices and schools, so mastic packages have to keep pace with busy programmes. Mortimer 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, which is why external dates are agreed with the site manager.
For contractors at a school such as Mortimer St John's C.E. Infant School, sealing has to be finished before term starts. Historic houses such as Stratfield Saye House (3.6 miles south-east of Mortimer) are a reminder of the older buildings in the wider area, where sealing against old stone, brick or timber needs compatible products.
Mortimer is about 4 miles north-east of Tadley, in West Berkshire. We send applicators to Mortimer for mastic packages, handled exactly as we handle every other area. 140 places across West Berkshire fall within our area, Mortimer among them. We also cover Reading, around 6 miles from Mortimer.
Business premises anywhere in RG7 are within our area for mastic packages. We cover commercial and managed buildings on The Street, Croft Road and Leigh Field. Nearby places we also cover include Stratfield Mortimer (1 mile east), Mortimer West End (1 mile south-west), Goddard's Green (2 miles north-east), Burghfield Common (2 miles north) and Wokefield (2 miles north-east). Nearby towns on our patch include Newbury (11 miles west), Thatcham (8 miles west), Speenhamland (11 miles west), Fords Farm (5 miles north), Little Heath (6 miles north) and Calcot (5 miles north).
What’s near Mortimer
Recent enquiries here include premises near The Willink School, The Willink School and Padworth Common Local Nature Reserve, among other places. The nearest railway station is Mortimer station, about 1.4 miles east of the centre. Well-known places in the area include Calleva Museum (2 miles south-west) and Beaumys Castle (3.7 miles east). Not far away are Hosehill Lake.
Building owners, agents and FMs in Mortimer
We work for building owners and managing agents on sealant work across single buildings or whole portfolios. One quote can cover more than one site, which keeps the paperwork simple.
As a CHAS accredited contractor and Constructionline member, we make supplier vetting simple. Our insurance certificate can be sent along with the quote.
Common questions from Mortimer clients
Will you fit the mastic around our build programme in Mortimer?
Yes, we work to the programme and the sequence the site sets. Any paperwork you need, from RAMS to our insurance certificate and CSCS details, is confirmed with the quote.
Is Stacey Industrial Park, near Mortimer, within your area?
Yes. Our area takes in Mortimer and its surroundings, with estates and business parks such as Stacey Industrial Park included. A few photos and the unit address let us price the work.
Do you offer coloured sealant?
In many cases, yes. Many products come in a range of standard colours, and matching to RAL references or surrounding finishes is often possible. We confirm what’s available for the specified product when we quote.
Can you clear a mastic snag list before handover?
Yes. We can work through a mastic snag list area by area before handover, cutting out damaged or poor joints and resealing them.
Will you quote for a small job?
We quote for single jobs as well as large packages and programmes. Photos and a description are enough to start.
Does weather affect external mastic work?
External sealant needs a dry joint and a temperature within the product’s range. Frosty or damp mornings can hold up external sealing, so internal areas are often done on those days.
How many days will you need on site?
We plan the time on site around your programme and access. You will have an expected duration with the quote.
What affects the price in Mortimer
The price varies from site to site. Expect it to depend on:
- Joint width, depth and condition
- The site’s rules and procedures
- Quantities, in metres or numbers
- Travel to remote or island sites
No two sites price the same: the joint sizes, the specified product, access and working hours each have a bearing. A fixed quote follows once we understand the job.
Sending details for a quote
Whether it’s one area or a whole building, these details speed things up:
- Approximate linear metres or a joint schedule
- The site address and postcode
- Specification clauses that apply
- Access details, including height
For a fixed quote, speak to us on 01277 525 020 or email the details over. Our quote form is another easy route.
Also near Mortimer
Other services in Mortimer
Signs you need construction mastic in Mortimer
A new building moves while it dries and settles. Materials lose construction moisture and shrink and internal caulk in a moving joint is usually the first to crack. Choosing the right product for each joint reduces that.
What tends to prompt an enquiry:
- A mastic package split between trades with no clear owner
- Oversized or tapered gaps around new frames
- Frame perimeters left unsealed or poorly sealed
- Internal caulk splitting as the building dries out
New units and refits on sites such as Stacey Industrial Park (2.9 miles south-west of Mortimer) need their panel and perimeter joints sealed to the specification.
Questions to ask before you book
- Will CSCS-carded applicators be on site?
- How long is the guarantee, and what does it include?
- The named product and why it was chosen
- Their approach to joint depth and backing