Roofing Sitework Guide vs Knowledge Hub
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Roofing Sitework Guide
This app provides instant advice, illustrations, and step-by-step fixing procedures for roofing sitework. It is based on extensive industry experience and relevant British Standards for clay and concrete tiles, dry fix, and ventilation systems.
- Instant on-site advice
- Illustrations and procedures
- Based on British Standards
- Covers tiles, dry fix, and ventilation
- Manufacturer expertise
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Make roofing on site even easier by using our app to get instant advice, illustrations and step-by-step fixing procedures on your tablet or mobile. This ‘Sitework Guide’ is based on Marley's long history in the manufacture and specification of clay and concrete tiles, dry fix and roof ventilation systems. It incorporates the recommendations of BS 5250, BS 5534, BS 8000 and BS 8612 in the application of these products. Marley is at the forefront of the roofing industry in the UK, with over 100 years of roofing expertise and heritage. But that’s not all. We offer flexible, efficient service that saves our customers time and money on their projects. We’re even accredited by the Institute of Customer Service for our commitment to deliver the best possible customer experience. We are the only UK manufacturer offering all elements of a roofing system including: • Clay and concrete tiles • Shingles • Roofing accessories • BS 5534 compliant JB Red Batten
Knowledge Hub
Access comprehensive Vent-Axia ventilation product information, including datasheets, instructions, and brochures, in a single, searchable digital location. This app simplifies information retrieval for professionals and homeowners, offering quick access to essential technical details and company resources.
- Searchable digital assets
- Technical datasheets
- Fitting and wiring instructions
- Range brochures
- Company information and contact details
- Request a call back feature
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Our ‘Knowledge Hub’ app provides comprehensive information for electrical wholesalers, contractors, installers, specifiers, house-builders, self-builders, social housing providers and home owners interested in Vent-Axia ventilation products. Your time is important and little improvements can make big differences, Vent-Axia has simplified the way we deliver information to you, forget the endless download of PDFs from web pages, our digital assets are all in a single place easily searchable, delivering you the information you need in the shortest possible time frame. Serving as a handy tool in the office, on the road, on site, in fact anywhere, have our product and technical information at your fingertips. You will find the entire collection of all the supporting assets to Vent-Axia ventilation products that are manufactured and designed to work together, giving builders and construction professionals the complete ventilation solution. The app includes technical datasheets, fitting and wiring instructions and our range brochures and an easy link to our company information, website and contact details. Need information about the products? It is now easy to request a call back from our team within the contact section of the app. For Knowledge Hub app support, please e-mail info@vent-axia.com. The app enables search, view and sharing of company brochures, range brochures, product datasheets and fitting and wiring instructions.
Screenshots
Verdict
The clearest difference is review sentiment: Knowledge Hub at 100% against Roofing Sitework Guide's 60%. On price, update cadence, ads and in-app purchases there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Roofing Sitework Guide ships an update every 3 months, Knowledge Hub every 2 months. The most recent releases landed on September 20, 2026 and September 28, 2026 respectively.
| Parameter | Roofing Sitework Guide | Knowledge Hub |
|---|---|---|
| Price | Free | Free |
| Positive reviews | 60.0% of reviews | 100.0% of reviews — better |
| Update frequency | Every 3 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 11.0 — better | 12.0 |
| Further details — not scored | ||
| Size | 40 MB | 35 MB |
| Age rating | 4+ | 4+ |
| Developer | Marley Ltd | Volution Group |
Customer experience
Roofing Sitework Guide
Knowledge Hub
In-app purchases
Roofing Sitework Guide
No in-app purchases
Knowledge Hub
No in-app purchases





