How we collect, use, and protect your information — written in plain English, not legal jargon.
1. Who We Are
concretesmath.com/ is a free construction reference website based in the United Kingdom. We are the organisation responsible for your data.
concretesmath.com/ is operated as a free public resource providing construction guides, reference guides, and engineering resources for engineers, contractors, students, and DIY homeowners worldwide.
Website:concretesmath.com/
Email:hello@ConcretesMath.com
Location:United Kingdom
For the purposes of the UK General Data Protection Regulation (UK GDPR) and the Data Protection Act 2018, concretesmath.com/ is thedata controllerfor any personal information we collect from you.
2. What Information We Collect
We collect very little. For most visitors, we collect only anonymous analytics data. We only collect your name and email if you choose to contact us through our contact form.
Information You Give Us Voluntarily
We only collect personal information when you actively provide it. This happens in one scenario:
- Contact Form:When you submit a message via ourContact Us page, we collect your first name, last name, email address, and the content of your message. Providing this information is entirely voluntary.
Information Collected Automatically
When you visit concretesmath.com/, certain information is collected automatically by our analytics software and web server. This information does not identify you personally:
- Data Type: Page views; What It Includes: Which pages were visited and in what order; Why We Collect It: Understand which guides are most read; Identifiable?: No — anonymous
- Data Type: Session duration; What It Includes: How long a visit lasts; Why We Collect It: Improve usability and content; Identifiable?: No — anonymous
- Data Type: Referral source; What It Includes: Which website or search engine sent the visitor; Why We Collect It: Understand how people find us; Identifiable?: No — anonymous
- Data Type: Device type; What It Includes: Mobile, tablet, or desktop; Why We Collect It: Ensure guides work on all devices; Identifiable?: No — anonymous
- Data Type: Country / region; What It Includes: Approximate geographic location (country level only); Why We Collect It: Understand our global user base; Identifiable?: No — country level only
- Data Type: Browser type; What It Includes: Chrome, Safari, Firefox, etc.; Why We Collect It: Fix compatibility issues; Identifiable?: No — anonymous
- Data Type: IP address; What It Includes: Your internet address at time of visit; Why We Collect It: Security, spam prevention, approximate country; Identifiable?: Partially — anonymised before storage
What We Do NOT Collect
- We donotcollect your name, email, phone number, or any other personal identifier unless you voluntarily contact us.
- We donotcollect payment information — all our resources are completely free.
- We donotbuild profiles of individual users or track you across other websites.
- We donotuse social media tracking pixels or advertising cookies.
3. How Our Website Content Works
Every number you type into our guides stays entirely in your browser. Nothing you enter is ever sent to us or stored anywhere.
All estimates on concretesmath.com/ — theConcrete Volume Guide,Footing Guide,Aggregate Guide,Mix Design Guide, and all other resources — are performed entirely within your web browser using JavaScript.
When you enter dimensions, select materials, or follow the worked method:
- The estimate runs locally on your device.
- Your project dimensions, material quantities, and results are not logged, stored, or accessible to us in any way.
This means:You can use our guides for sensitive commercial projects, client work, or confidential engineering estimates with full confidence that your project data remains entirely private to you.
4. Information You Provide via the Contact Form
If you contact us, we use your name and email only to reply to you. We don’t add you to any mailing list. We delete your message once it has been resolved.
What We Collect
When you submit a message via ourContact Us page, we collect: your first and last name, your email address, the topic category you selected, and the content of your message.
Legal Basis for Processing
We process this information on the basis oflegitimate interests(UK GDPR Article 6(1)(f)) — specifically, our legitimate interest in responding to enquiries from people who choose to contact us. Where you have provided explicit consent via the privacy checkbox on the form, we additionally rely onconsent(Article 6(1)(a)).
How We Use It
- To read and understand your question, suggestion, or report.
- To send you a reply to your message — and only your message.
- To follow up if necessary to resolve a technical issue you reported.
What We Do Not Do
- We donotadd you to any mailing list or newsletter.
- We donotsend you any unsolicited marketing communications.
- We donotshare your contact details with any third party.
- We donotuse your email address for any purpose other than replying to your message.
5. Analytics, Cookies & Tracking
We use privacy-friendly analytics to understand how many people visit the site and which pages are most popular. We do not use advertising cookies or social media trackers.
Analytics
concretesmath.com/ uses analytics software to understand aggregate patterns in site usage — which pages are most visited, which guides are most read, and how visitors find us. This helps us improve the site and prioritise which new guides to build.
Where we use analytics resources, we configure them to: anonymise IP addresses before storage, disable cross-site tracking, not use fingerprinting, and not share data with advertising networks. The analytics data we collect is statistical and aggregate — it does not identify individual visitors.
Cookies
Cookies are small text files stored in your browser. concretesmath.com/ uses a minimal approach to cookies:
- Cookie Type: Essential / Functional; Purpose: Allow the site to function correctly (e.g. remembering your unit preference); Duration: Session or up to 1 year; Can You Disable?: No — site may not work correctly without these
- Cookie Type: Analytics; Purpose: Anonymous usage statistics — pages visited, session duration, device type; Duration: Up to 13 months; Can You Disable?: Yes — via your browser settings or cookie preferences
- Cookie Type: Advertising / Social; Purpose: Not used on concretesmath.com/; Duration: N/A; Can You Disable?: N/A — we do not place these
How to Manage or Disable Cookies
You can control and delete cookies through your browser settings at any time. Most browsers allow you to refuse all cookies, accept only certain types, or delete existing cookies. For guidance on how to do this, visit:
- Google Chrome — Manage Cookies ↗
- Mozilla Firefox — Manage Cookies ↗
- Apple Safari — Manage Cookies ↗
- Microsoft Edge — Manage Cookies ↗
Please note that disabling analytics cookies will not affect your ability to use any of our guides — they will continue to function fully.
6. How We Use Your Information
We only use your information to run the website, reply to your messages, and improve the guides. Nothing else.
We use the information we collect for the following purposes only:
- To operate and maintain the website— ensuring the site is available, fast, and secure.
- To respond to your enquiries— replying to messages submitted via the Contact Us form.
- To improve the site— using anonymous analytics data to understand which guides are most read and where users encounter difficulty.
- To fix bugs and technical issues— anonymous error logs help us identify and fix problems.
- To protect against abuse— IP addresses may be used to identify and block spam or malicious traffic to the contact form.
- To comply with legal obligations— if required by law, court order, or regulatory authority.
We donotuse your information for: advertising, profiling, automated decision-making, marketing emails, selling data, or any other purpose not listed above.
7. Who We Share Your Data With
We never sell your data. We share minimal data with a small number of service providers who help us run the website — and only what is strictly necessary.
We do not sell, rent, or trade your personal information to any third party. We may share limited data with the following categories of service provider, strictly to operate the website:
- Service Provider Type: Web Hosting Provider; What They Receive: Anonymous server logs (IP, page requested, timestamp); Purpose: Serving the website to visitors; Data Location: EU / UK
- Service Provider Type: Analytics Provider; What They Receive: Anonymised usage data (no personal identifiers); Purpose: Understanding site usage patterns; Data Location: EU / UK
- Service Provider Type: Email Service Provider; What They Receive: Your name and email address (contact form only); Purpose: Delivering your message to us and our reply to you; Data Location: EU / UK
All service providers are bound by data processing agreements requiring them to protect your data, use it only for the specified purpose, and not share it further. We do not share data with advertising networks, social media platforms, data brokers, or any other third party.
Legal Disclosures
We may disclose your information if required to do so by law, court order, or a competent regulatory authority — for example, if we receive a valid legal request from law enforcement. In such cases, we will disclose only the minimum information legally required and will, where permitted, notify you in advance.
8. How Long We Keep Your Data
We keep contact form messages for 12 months and then delete them. Anonymous analytics data is kept for up to 26 months.
- Data Type: Contact form messages (name, email, message); Retention Period: 12 months from date of final reply; Reason: In case of follow-up; deleted routinely after resolution
- Data Type: Anonymous analytics data; Retention Period: Up to 26 months; Reason: To enable year-on-year comparison of site usage
- Data Type: Server access logs (IP addresses); Retention Period: 30 days; Reason: Security monitoring and spam detection
- Data Type: interactive inputs; Retention Period: Not retained — zero duration; Reason: All estimates are local; no data is transmitted
After the relevant retention period, data is permanently and securely deleted. You may request earlier deletion of your personal data at any time — see Section 9 (Your Rights) below.
9. Your Privacy Rights (UK GDPR)
Under UK data protection law, you have rights over your personal data — including the right to see what we hold, correct it, or ask us to delete it. Just email us.
Under the UK General Data Protection Regulation (UK GDPR) and the Data Protection Act 2018, you have the following rights regarding your personal data:
Right to Access
Request a copy of the personal data we hold about you (a “Subject Access Request”).
Right to Rectification
Ask us to correct any inaccurate or incomplete personal data we hold about you.
Right to Erasure
Ask us to delete your personal data — the “right to be forgotten” — subject to certain legal exceptions.
Right to Restrict Processing
Ask us to stop using your data while a dispute or complaint is being resolved.
Right to Portability
Request your personal data in a structured, commonly used, machine-readable format.
Right to Object
Object to us processing your data on the grounds of legitimate interests.
Right to Withdraw Consent
Where we rely on your consent, you may withdraw it at any time without affecting prior processing.
Rights re: Automated Decisions
We do not make any automated decisions affecting you — this right is not relevant to our current processing.
To exercise any of these rights, please email us athello@ConcretesMath.com. We will respond within30 daysas required by UK GDPR. Exercising your rights is free of charge.
Right to Lodge a Complaint
If you are unhappy with how we have handled your personal data, you have the right to lodge a complaint with theInformation Commissioner’s Office (ICO)— the UK’s data protection supervisory authority:
ico.org.uk/make-a-complaint ↗Phone: 0303 123 1113
We always encourage you to contact us first athello@ConcretesMath.com— we will do our best to resolve any concern directly and promptly.
10. How We Protect Your Data
We use HTTPS encryption, access controls, and secure hosting to protect the small amount of data we do hold. No system is 100% secure, but we take reasonable and proportionate precautions.
We implement appropriate technical and organisational measures to protect your personal data against unauthorised access, accidental loss, destruction, or disclosure. These include:
- HTTPS / TLS Encryption:All data transmitted between your browser and our website is encrypted in transit using HTTPS with a current TLS certificate.
- Secure Hosting:Our website is hosted on reputable infrastructure with physical and network security controls, regular backups, and access logging.
- Access Controls:Access to any personal data (such as contact form submissions) is restricted to authorised personnel only.
- Minimal Collection:The most effective security measure is collecting as little personal data as possible in the first place — which is our primary approach.
- Regular Review:We review our security practices regularly and update them when better approaches become available.
Please be aware that no method of internet transmission or electronic storage is 100% secure. While we use commercially reasonable security measures, we cannot guarantee the absolute security of any data transmitted to or from our website.
If you believe your personal data has been compromised, please contact us immediately athello@ConcretesMath.com. We will investigate and, where required by law, notify the ICO within 72 hours of becoming aware of a reportable data breach.
11. Third-Party Links & External Websites
We link to external sites like ACI, BIS, and HSE for reference. Once you click an external link, their privacy policy applies — not ours.
concretesmath.com/ contains links to external websites — including standards organisations (ACI,BSI,BIS India), government bodies (HSE,Planning Portal), and other construction resources.
These external links are provided for reference and convenience. concretesmath.com/ has no control over, and accepts no responsibility for, the content, privacy practices, or data handling of any external website. When you click an external link and leave our site, this Privacy Policy no longer applies — the privacy policy of the destination website governs instead.
We recommend reviewing the privacy policy of any external website before providing them with personal information.
12. Children’s Privacy
Our site is aimed at adults and professionals. We do not knowingly collect data from anyone under 16.
concretesmath.com/ is a professional construction reference site designed for adults — engineers, contractors, students in higher education, and adult DIY homeowners. Our content and resources are not directed at children.
We do not knowingly collect personal information from anyone under the age of 16. Our guides require no personal information at all, and our contact form is intended for adult use only.
If you are a parent or guardian and believe that a child under 16 has submitted personal information to us via the contact form, please contact us athello@ConcretesMath.comand we will promptly delete that information.
13. Changes to This Privacy Policy
If we make significant changes to this policy, we will update the date at the top of this page. We will always display the current policy here.
We may update this Privacy Policy from time to time to reflect changes in our practices, technology, legal requirements, or for other operational reasons. When we make changes, we will:
- Update the“Last Updated”date at the top of this page.
- Update theVersion numbershown on this page.
- For significant changes that materially affect how we process your personal data, take additional steps to inform you — such as placing a notice on our homepage.
The current version of this Privacy Policy is always available atconcretesmath.com/privacy-policy. We encourage you to review this page periodically. Your continued use of the website after any changes constitutes your acceptance of the updated policy.
Version History
Version 2.0 — 1 January 2026:Updated to reflect current data practices, UK GDPR compliance, and expanded guide library. Contact form section clarified.
Version 1.0 — Launch:Initial privacy policy published.
14. Contact Us & Data Enquiries
If you have any questions about this Privacy Policy, want to exercise your data rights, or need to report a privacy concern — we’re here to help. We respond to all privacy enquiries within 30 days.
Or email us directly:hello@ConcretesMath.com