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5 Year Crack Free Guarantee

All properties in the UK new or old are subject to a small risk of settlement which in turn may cause building movement and settlement cracking, that's why we offer a 5-year crack free guarantee!

The risk of settlement is higher in new build properties or older properties which have just undergone any major refurbishment works which adds any further weight to the property. The building industry currently classifies this issue as a naturally occuring phenomenon and is therefore not currently covered under the standard warranties of any coatings manufacturers. To combat this we will complete no quibble decorative localised repairs to K rend, Parex Fassa Bortolo or Ecorend render systems exhibiting normal movement stress cracking with our Mendrend Render Repair System FOC for a cover period of five years on any site we have supplied entirely and one of our approved applicators has applied the system.


This service is exclusive to Rendit and our approved applicators and is not available with other suppliers! 


We simply ask that if the site starts to exhibit signs of settlement cracking in the render that the site should be monitored for a period of a minimum of 6 months and all issues evident across the site will be attended in a block booking after that point. The cost of labour, materials and travel to site is fully included but we do not cover the cost of access equipment hire if needed.



 Low cost maintenance and accident repairs

  • Our Crack Free Guarantee all extends to accidents causing issues with newly applied renders as well!  

  • We normally charge £16.99 + VAT per m2  (Minimum day charge of £695.00 + VAT for the small jobs) to fully refurbish entire walls that have been accident damaged or have other staining or dis-coloration issues. This price will be lowered to £9.99 + VAT per m2 for sites we have supplied renders to for a period of 2 years. (Minimum day charge of £250.00 if the job is only small.)

  • This price does not include access requirement or travel costs for repairs to accidental damage.



1. What's the catch?

If either you or one of our approved applicators buy your complete render system from us and our one of our approved applicators apply the system in its entirety there isn't one! We will complete localised decorative repairs to qualifying normal settlement cracking that occurs in render systems we have supplied for 5 years after the delivery date with no quibbles! It should be noted that its often wrongly assumed that the manufacturers of external coatings cover you for cracking in their own warranties but this isn't the case as the source of settlement cracking does not occur in their coating but in the substrate of the property its applied to instead. You absolutely are not covered by them on this basis, if they say you are ask for it in writing!

2. How can Rendit offer this when no one else does?

Rendit has developed Mendrend, our own fully authorised and patented render repair system which we have been using daily for over 30 years! We are good at this if we do say so ourselves!

3. Does this make Rendits prices expensive?

We constantly monitor prices across the UK and we are confident that you should find our prices more than competitive, especially when you look at the full picture including any delivery costs. We don't aim to be the cheapest, we leave that to the suppliers who have no idea what they are selling or how to help you if you have problems. Our 5 Year Crack Free Guarantee simply cannot be beaten!

4. How do I qualify for this guarantee?

It's simple, if you or one of our approved applicators buy your correctly specified render system from us in its entirety and one of our approved applicators applies it you are automatically covered for 5 years! If you purchase any part of your render system elsewhere such as beads, mesh etc, you will not be covered. Clients who have this cover in place include large housebuilders such as Persimmon and Taylor Wimpey, main contractors, sub contractors, private contractors and the end user. It doesn't matter who pays we cover the render system! We ensure we only supply components that are of the highest quality, even our PVC beads are BBA tested and approved to 30 years! 

5. What is a settlement crack and who's to blame for them happening?

Settlement cracks are very easy to identify, they tend to be 0.5 - 3mm in width and follow a straight line either between openings or along the full length or breadth of a wall. These minor cracks always occur through the underlying building substrate which in turn cracks the decorative render coating. It's not unusual for the render system or even the poor render applicator to be blamed for the appearance of settlement cracking, this is completely incorrect but still happens due to widespread ignorance of the causes of the issue. Renders do vary in overall strength so they may push an already stressed wall which is already full of settlement forces to its limit when applied but ultimately the building substrate is where the structural strength comes from, not the render. Settlement cracks are also not a sign of building weakness, they merely indicate that the distribution of energy around the building means that it just needs to shift slightly to a more natural position and modern building design absolutely expects this to happen. When you consider all these factors it becomes apparent that providing corners haven't been cut in a buildings design and build that means building standards haven't been followed there is no one to blame when settlement occurs. This is why our 5 Year Crack Free Guarantee is so ground breaking!

Severe cracks that start to exceed 5 - 6mm or are lipped may indicate something more structural is occuring instead of simple settlement so should be investigated by a structural engineer and small random splits or tears that tend to be only a few cm long, or cracks that occur immediately after the render application indicate an application issue rather than settlement. Whilst we wouldn't cover these types of issues under our Crack Free Guarantee we do carry out repairs under the additional low cost benefits of the guarantee as described above.

6. Will my property crack then?

Honestly, if we were betting people we'd bet that it wouldn't with more than decent odds but we wouldn't be surprised if we lost that bet!

We have been repairing cracks in render and brick building facades for over 30 years! All properties in the UK are at risk of settlement which in turn causes settlement cracking. This risk is higher in new build properties or older properties undergoing major refurbishment works that adds further weight to the fabric of the building. Renders tend to be applied to new builds or older properties as part of major refurbishment so our 5 Year Crack Free Guarantee should have you more than covered as its designed to address any settlement issues that may arise directly from the render works being done to the property.

Prime building land in the UK is at a premium so more building is occuring on more volatile clay, chalk and saturated ground. Building methods are getting better at mitigating settlement risks so the more severe issues are less but minor issues will always still occur.

7. My other suppliers say that if I use mesh and expansion beads that there's no chance my render will crack is this true?

This one always makes us smile, this is false, absolutely false! Your average builders merchant employee has never been on a building site so they tend to repeat every old wives tale they hear from the people who have. Whilst mesh massively improves the structural strength of a render system and we recommend their use without equivocation, they tend to be made from fibre glass so they do not have strength to hold a building together that wants to move apart by a couple of millimeters. Expansion beads are great for 2 purposes; they help an applicator break up a large wall thus making the application of a render system more manageable and they are for bridging over expansion gaps already present in the substrate. If there is no expansion joint already present in the substrate before the application of any render system they should be considered decoration only as they are serving no other purpose. 

8. What standard are crack repairs carried out to? 

British Standards and the National House Building Council have a slightly different take on what visual standard external coatings should be finished to so in order to provide you with peace of mind we work to those standards to provide repairs that comply with both, provided the cracked walls are not discoloured or stained and have not lipped from one side of the cracks to the other. (Lipped cracks are relatively rare but do happen.) Saying that, our own internal standards are even higher and most cases we aim to provide localised repairs that are completely unnoticeable to the untrained eye where the properties of the wall allows. If the walls are are discoloured, stained or displaying a lip from one side of a crack to the other we will notify you as such to discuss your options. It should be expected that decorative localised repairs to lipped cracks or cracks on stained / discoloured walls are going to be still visible once carried out. These types of cracks may require additional general overcoating works over the entire wall to improve their look which will be chargable.

Basically, both British Standards and the NHBC say repairs to external renders can still be noticable but should not be "unduly obtrusive," when viewed from a distance of 10m out of direct sunlight for your reference.

 9. Can't I buy something from the builders merchants and do the repairs myself?

All we would say is good luck!

These modern renders are produced using mined minerals and applied outside usually. Their colour shade can vary a lot from one job to the next purely due to different application and drying criteria on each day. If you could find a suitable off the shelf product (We aren't aware of any.) and somehow manage to action a repair of the cracks by matching the random texture it would take sheer luck to get a colour matched repair. This would also be the case with any products the manufacturers offer you, if you don't believe us ask them to confirm in writing that their products are guaranteed to be colour matched to your property for a localised repair. Why risk your expensive render system being covered in unsightly lines from a botched repair? Our technicians have vans kitted out with mobile labs and mixing equipment. They can measure pigment weights with an accuracy of a thousandth of a gram. Every house is expertly colour matched by eye and materials mixed on site, as far as we are concerned we believe this is the only way to get a great repair!

We'd also ask if you are an applicator why would you want to be servicing historic customer issues if you are busy and if you are an end user why would you want to service your issues yourself?

10. How many times will you visit to repair cracking under the 5 Year Crack Free Guarantee?

This guarantee covers you for one visit free of charge for decorative repairs of any cracking issues that may arise during the five years of cover. When cracking is noticed after the application of render we would advise that the cracks are carefully monitored for a period of at least 6 months to ensure they have stabilised before we are asked to attend for the free of charge repair visit, this is to ensure longevity of repair. We do realise that sometimes issues may arise on site where outside pressures mean that we may be asked to attend within the 6 month monitoring period. We are happy to try to accommodate this where we can but with the understanding that no further support under this guarantee will be provided. If we attend site on an agreed day to complete repairs under this guarantee and for whatever reason the site is not available for reasons outside of our control we will deem that to be your one free of charge visit and further visits will be chargeable. We do not cover the cost of providing access equipment if it is needed to complete the works. Finally, it is your responsibility to point out any cracks to our repair technicians on the day of attendance. If you are not available to show us your issues which result in required repairs being missed then any further visits to rectify missed cracks will be chargeable. 

 11. If my property is deemed to have structural issues is this covered?

This guarantee is only offered within the limitations of the capabilities of our Mendrend Render Repair System and the original render system itself. It does not cover any aspect of the buildings underlying substrate. Mendrend should not be used to hide structural problems within a building, therefore buildings with structural problems identified are not covered. Thankfully, this is a very rare occurrence though!

12. My cracks are only visible when it rains are they covered?

Cracks that are only visible when the walls are wet are not covered as this would be defined as "crazing." Generally cracks need to be visible on dry walls and out of direct sunlight when viewed from a distance of at least 7m to be covered under this guarantee as it's at 10m viewing distance that bodies such as British Standards, NHBC and the LABC deem clearly visible cracks to be "unduly obtrusive," in their technical documentation. We can help you correct this specific issue at low cost though so please let us know if this is happening.

13. Once repairs are completed my house will never crack again, right?

Sorry, we cannot guarantee against this. This issue is such that any property in the UK can move at any time which may cause new cracks to appear or further issues with the repairs we have already completed. Some properties can keep moving for a few years for various reasons which is why we strongly recommend the close monitoring of any new cracks for at least 6 months to ensure the building has stabilised. This guarantee covers you for one visit which can be carried out at any point within the five years of us delivering a complete qualifying render system to your property. Any further visits to cracking on your property, regardless of the reason will be chargable, albeit at the reduced rates mentioned above.

14. What is a localised decorative crack repair?

A localised decorative repair is one which affects only the crack itself and no other part of the wall. The repairs should be deemed decoration of the render sytem only as they add no further structural properties or improvements to the building.

15. This is too simple, there's got to be another reason the guarantee won't be valid?

Ok, one last thing. All the goods need to be paid for in full by all interested parties for the guarantee to be valid. If you hold an account with us which is in payment arrears then this guarantee on all qualifying render systems purchased through the account will be suspended until the account is brought back up to date with it's payments. This guarantee is not offered as a means of dispute resolution and we will not proceed with remediation works until all interested parties confirm they are happy to proceed under the terms offered.