SA-014Attested
L03 riser R1, grid B/2
Coated batt and mastic, mixed services
Struck in England - MMXXVI
ASSAYA®
Every seal, attested
Passive fire protection software for contractors and subcontractors
Recording software for fire stopping and fire doors, with any other fire protection trade built for your firm on request. Pin every record on the drawing, snap before/during/after, and it's written into a tamper-evident register in seconds.
PriceExcl VAT
£32 a slot a month
£27 a slot from ten slots, on every slot.
Client observers£0
Free, never counted
Client, certifier, fire engineer.
HostingLondon
UK, London data centre
Each firm gets its own isolated instance.
Made byGreat Britain
On your phoneNo signal
Works offline
It syncs when you are back in range.
02The hard part
Other apps store your records. Assaya proves them.
The hardest part of fire stopping isn't the work - it's proving the work.
When a main contractor, a certifier or your fire engineer asks about a seal, the same five questions come up. Assaya answers them on the record itself, captured on site while the work is in front of you.
Built from the trade, to the trade. Assaya is owned and operated by Rockfirepro Ltd - a passive fire protection contractor like you, in London, Great Britain.
The five questionsAnswered on the record
Who fitted it?Operative, qualification, signature.
Maker's mark
To what tested detail?Product, substrate, service, fire rating.
Standard mark
Where exactly?A pin on the drawing, with before, during and after photos.
Seal mark
When?Stamped by the server clock, not the phone.
Date letter
Has anyone changed it since?Every change is a new snapshot, chained by SHA-256.
The chain
Fire stopping and fire doors as standard.
Any other fire protection trade built for your firm on request, on the same register.
Trade 01Standard
Fire stopping
Penetration seals, batt & mastic, compound. The core register.
Trade 02Standard
Fire doors
Inspection or install: ratings, gaps, closer checks. Due-dates are scheduled and chased, not forgotten.
Your tradeOn request
Your trade, built for you
Need dampers, coating, board or another trade on the same register? We build it for your firm on request.
03The marks
Every seal, struck like a hallmark.
An assay office proves precious metal is real. Assaya proves your fire-stopping is. Each record carries the marks an assayer would strike, and each one is chained to the record before it, so a change shows.
SA-016
Penetration seal | Fire stopping
- Status
- Complete
- Defects
- 0
- Photos
- 3 of 3
- Sync
- Synced
Excerpt | NTSDwg A-103 rev C | Level 03
- Complete
- In progress
- Outstanding
- Defect
Where
- Project
- Sample block
- Level / grid
- 03 | C/3
- Location
- Riser R2 shaft wall, corridor face
- Drawing
- A-103 rev C Current
- Expires
- 31 Dec 2026
Who
- Installer
- OP-07
- Qualified
- On file
- Signed
When
- Created
- 09:12:41 UTC
- Sealed
- 14 Oct 2026, 09:47:12 UTC
- Clock
- Server, not phone
What Specification
- Services
- Copper pipe x1
- Size
- 28 mm
- Substrate
- Shaft wall, 2 x 15 mm board
- Opening
- 52 mm round Cored
- Product
- Intumescent mastic + pipe sleeve
- Batch / lot
- LOT 26-0412-B Scanned
- Tested detail
- Detail 4.2
- Rating req.
- EI 60Change it
- Notes
- Pipe sleeve through the wall, annulus sealed to detail 4.2 from the corridor face. Seal label fixed beside the pipe.
2026-10-14 09:12:41Z
2026-10-14 09:31:07Z
2026-10-14 09:47:12Z
The chain | SHA-256 | Entries 469-473Chain intact - 0 breaks - 5 attested
SA-0146aac..0646
SA-01517ed..6c6f
SA-0161182..c30c
SA-0176d62..254c
FD-021b103..a7e8
Prev 17ed..6c6f This 11822cd58c14e18ac3..bf5a60ec30c11822cd58c..0ec30c
Fig. 01 Sample record drawn for this pageDemonstration data, not a real building
-
01 Maker's markWho
Who struck it.
Every record carries who struck it - operative, qualification, signature. Accountability, stamped in.
The app asks for each detail in turn - operative, tested detail, product, substrate, fire rating - so nothing is left half-recorded.
Detail 01.1 Guided capture, SA-016Sample
- 01OperativeOP-07, qualification on file
- 02Tested detailTested detail 4.2
- 03ProductIntumescent mastic + pipe sleeve
- 04Substrate2 x 15 mm board
- 05Fire ratingEI 60Now
Signed on captureWho, what, where, when
-
02 Standard markWhat
To the tested detail.
Product, substrate, service penetration, fire rating - logged against the tested detail, not from memory.
The sample records on this page show EI and FD ratings. The rating list is a per-workspace setting, so your workspace records ratings in the form your certifier expects. The same is true of work types, services, substrates and materials.
-
03 Seal markWhere
Pinned to the drawing.
Tap the plan, drop a pin. Every seal is placed against the drawing, not described in a note nobody can find later.
Every evidence photo carries its seal reference, location and UTC capture time burned into the image itself - it stays readable after the photo leaves our system.
-
04 Date letterWhen
Stamped by the server clock.
Every change to a seal is an append-only, hash-chained snapshot, stamped by the server clock rather than a phone that could be set wrong.
-
05 The chainChanged since?
Chained to the one before.
Each snapshot is linked by SHA-256 to the one before it. Records are added, never overwritten. Alter any past entry and the chain breaks for everything after it.
Records imported from your old system are labelled imported rather than attested, because we did not witness them and will not pretend otherwise.
Detail 01.5 Per-seal history, SA-016Sample
Seal created | L03 riser R2, C/3
- Server
- 2026-10-14T09:12:41Z
- Prev
- 0000..0000 (first snapshot of this seal)
- Hash
- 106c19ff6547..7aece3
Photo added | during
- Server
- 2026-10-14T09:31:07Z
- Prev
- 106c19ff6547..7aece3
- Hash
- 4ed6662c2d31..71fc12
Status set | complete
- Server
- 2026-10-14T09:47:12Z
- Prev
- 4ed6662c2d31..71fc12
- Hash
- 7875bbdf75c3..7082e2
Each seal keeps its own history. hash = SHA-256( prev + entry ) - alter any past entry and the chain breaks for everything after it.
04On site
Three moves on site. The office gets the rest.
Capture fully offline and let it sync when you are back in range. A sync screen shows the queue so nothing is lost.
-
01 Pin it
Pin it on the drawing.
Tap the plan, drop a pin. Drawings are held with revision and expiry dates, so operatives work to the current sheet.
Real screen from the public demo - demo data -
02 Photos
Before, during, after.
Before, during and after photos, each stamped with time, reference and location, held against the record for good. No signal in the riser? It keeps working.
Level 03FS-031
DuringFS-031 - L03 riser 2 - grid B/3
2026-10-29 09:46:30ZBeforeDuringAfter
Illustration, sample data -
03 Struck
Struck into the register.
The record is linked by SHA-256 to the one before it and stamped by the server clock, not the phone. Records are added, never overwritten.
Level 03FS-031
Record struckFS-031 complete
SHA-25609dccb188e1eb7eda292012084f80f5d875f901e7f983446e9571f7e538a76c2
Server clock2026-10-29 09:47:12 UTC
Illustration, sample data -
04 Handed over
Handed over, still provable.
Share a register by link. No login and no account needed for the client to see the current record. The dossier comes with a printed certificate of record integrity.
- Main contractor£0
- Building owner£0
- Certifier£0
- Fire engineer£0
Illustration, sample data
05The Assay Bench
Try to fake this record. Watch it catch you.
Here are five sample records from one job, chained the way Assaya chains them. Change one rating, as if someone went back and edited it, and watch every link after it fail.
Any edit, ever, breaks the chain. That is the point.
SA-015Attested
L03 corridor wall, grid B/3
Intumescent pipe collar, 110 mm plastic pipe
SA-016Attested
L03 riser R2, grid C/3
Intumescent mastic, copper pipe 28 mm
SA-017Attested
L04 slab, grid C/4
Intumescent compound, mixed services
FD-021Attested
L03 lobby, door D3.02
Fire door inspection: gaps, closer, seals
Chain intact - 0 breaks - 5 attested - re-verified end to end
Real SHA-256, worked out in your browser. Nothing you change here leaves this page.
A check like this verifies the record's integrity - that the entries have not been changed since they were sealed. The physical workmanship on site is what your contractor signs for.
06Handover
From the riser to the handover.
Share a register by link. No login and no account needed for the client to see the current record. Issue evidence-pack PDFs, hallmarked so the client can hand them on with confidence in where they came from.
Fig. 03 From the riser to the handoverOne register
01 On site
The app
- Pin, photos, guided capture
- Works offline, syncs later
Sync
02 The office
The register
- Live job value
- Packs and spreadsheet export
Share link
03 The client
A read-only link
- Free, no login
- The evidence pack PDF
Who opens itCost
- The main contractor£0
- The building owner£0
- The certifier£0
- Your fire engineer£0
They open a link, hold no login and are never counted against your slots.
07For the money side
Live job value, as it is sealed.
Every seal is money on the wall. As your operatives capture each one, Assaya tallies the job's value live - so your commercial and contract managers see what is done, what it is worth and where the job stands. No waiting on the site report.
Fig. 04 Job value, level 03Sample
Earnings - live from the schedule of rates
Contract value£4,120.00
Earned (installed)£2,840.00
Outstanding (to do)£854.00
Remedial (defects)£426.00
69%
£2,840.00 earned£854.00 to do£426.00 remedial69% of the level earned
Activity this week and the two before
9seals completed this week5 vs last week to Thu
69%
20 complete4 in progress2 outstanding3 defects
29 seals all told
And the office runs on the same platform
- Work diary
- Van stock
- Materials and job costings
- RAMS and COSHH read-and-sign
- Recurring inspection due-dates
- A handover dossier with a printed certificate of record integrity
- A guided start with a sample job for new teams
- Roles scoped per job and per trade
08Price
The whole price list. On the page.
A slot is any account that logs in and does work - operative, surveyor or admin, all the same price. You don't have to book a demo to find out what it costs.
1-9 slotsMonthly
£32
A slot a month, billed from the day each slot starts.
3 slots £96 a month - 5 slots £160 - 9 slots £288
10 slots and upMonthly
£27
A slot a month. The lower rate applies to every slot.
Nine slots £288 a month. Ten slots £270 - the tenth slot lowers the bill. Above 40 slots it is still £27.
AnnualYearly
15% off
The same slots, billed once a year.
1 slot £326 a year - 5 slots £1,632 - 10 slots £2,754 - 25 slots £6,885 - 40 slots £11,016
Client observersNever counted
£0
They open a link. No login, no slot, no charge.
Main contractor - building owner - certifier - fire engineer
Billed monthly
£256 a month
£32 a slot - £27 at ten and up
Billed annually
£2,611 a year
15% off - £218 a month
At 8 slots you pay £256 a month at £32 a slot - or £2,611 for the year, billed annually.
No drawing credits, no storage tiers, no per-report, per-project or per-pin fee - for fire stopping and fire doors, team size sets the price and nothing else.
Prices exclude VAT. Rockfirepro Ltd is UK VAT registered (GB 524 1698 86). On UK orders, UK VAT is calculated at checkout and shown before you pay, as a separate line on your invoice. Buying from Ireland? We sell to VAT-registered businesses - enter your VAT number at checkout and the reverse charge applies, so no UK VAT is added; orders without a valid VAT number are refunded in full. Buying from Australia? No UK VAT and no GST is added. Buying from New Zealand, Singapore or Canada? No UK VAT is charged on a supply to a business outside the UK. We are not registered for New Zealand GST, Singapore GST or Canadian GST/HST, and any GST or HST treatment there is yours to account for in the normal way. Assaya has no French version, so we cannot sell into Quebec yet. Anywhere else, email hello@assaya-app.co.uk before you order.
We price and charge in pounds sterling. The rate moves, and your card issuer sets the one you actually get. Our pricing page shows roughly what the two rates work out at in your money - a sense of scale, not a quote.
Every slot is billed from the day it starts. Your slot count comes down from your next billing date - no notice period, no minimum term. Annual totals are rounded to the nearest pound.
Working on your own? The app's solo mode is free - no account, no server, records held on your own device.
Buy onlineSet up by a person in London, usually within the hour in UK working hours. Outside them, plan on being live by your following morning.
Where you work.
UK-built. On the App Store and Google Play in the six countries below. Each page says what applies there, and what does not.
Ancillary certificates
Ireland
When your fire stopping is on the Assigned Certifier's inspection plan, your records are what your ancillary certificate stands on.
Read what applies in Ireland
The annual assessor
New South Wales
In NSW your work is named in the regulation, and the person who assesses it every year is barred from being the person who installed it. That page is New South Wales only: we have not read the other states and territories.
Read what applies in New South Wales
Fire separations
New Zealand
New Zealand has no requirement that you record what fire stopping you installed. What there is instead falls on the building owner.
Read what applies in New Zealand
Form FSC02
Singapore
A Qualified Person certifies your fire stopping item by item on SCDF form FSC02 before the building can be occupied. Singapore law does not require you to keep a record after handover; keeping your own is a commercial decision.
Read what applies in Singapore
Fire doors, dampers and records
Canada
Neither the National Building Code nor the National Fire Code obliges you to document a firestop. The duty is about fire doors, dampers and the records of inspecting them, and it falls on the building owner. Assaya has no French version, so we are not in a position to sell into Quebec yet.
Read what applies in Canada
The UK site
United Kingdom
Built UK-first. The United Kingdom has its own site, assaya.co.uk.
Go to assaya.co.uk
09Independence
Built by a contractor. Sealed off from one.
Rockfirepro owns Assaya, and that is the whole of the relationship. Its contracting business does not oversee, monitor or access your work, your jobs, your clients or your records. Ever. Each firm's data sits in its own isolated instance - never pooled, never shared - and your full archive is one click away in your own console.
Your firm
Own instance, own database
Another firm
Own instance, own database
Rockfirepro contracting
No access
10Proof, not promise
Don't take our word. Take the public record.
Rockfirepro Ltd is a UK company, so these are United Kingdom registers and schemes. Where an official public register exists, we link you straight to it - Companies House, the ICO, the Cyber Essentials register. Where there isn't one (Constructionline), we say so. Cyber Essentials here is the UK NCSC scheme, not CSA Singapore's Cyber Essentials mark.
Companies House - UK
Rockfirepro Ltd
Company 16969024 - Active - Loughton, Essex
Verify on the register
ICO - UK data protection
Registered controller
Reference ZC191719
View the ICO record
Cyber Essentials - UK
Certified 16 July 2026
UK NCSC scheme - IASME register - cert 978eba8f-b619-44de-9d46-e6958011647e
Check the register
Constructionline - Gold - UK
Prequalified supplier
No public per-member register. Registration no. 1432425.
See all accreditations
Assaya is new. We have no long customer list and we are not going to invent one.
No bought reviews, no stock photos. Its first site is our own: Rockfirepro records live fire-stopping and fire-door jobs on Assaya, and the fire-stopping work is subject to the usual independent third-party inspection.
11Your next job
One published price. Every seal proven. Yours from the next job.
Keep in touch
ASSAYA is live - built on our own jobs. Leave a work email and a real person keeps you posted on what gets built next.
No spam. Product updates only. Built by the team behind Rockfirepro Ltd.