Best Damp Course Injection – DIY Damp Proofing Buyers Guide

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Damp proof course injection is one of the fastest and most cost-effective ways to deal with rising damp problems.

This is a chemical cream that gets injected into small holes drilled in your walls. It penetrates your brickwork and turns into a waterproofed barrier.

DPC injections can be the simplest way to treat your damp problems, specifically rising damp. Although, research has found that not every chemical DPC is as effective against damp. So, you need to make sure you’re getting damp course injection products that actually work.

In this article we look at the best damp injection products on the market. These are the DPC injections that work to stop damp, are simple to use, and cost-effective. It can make dealing with rising damp a DIY project, rather than a costly job hiring someone in. This is what you need to know:

The Best Damp Course Injections

Dryzone Damp Proofing Kit

dryzone best damp course injection kit

This Dryzone damp course injection is a full kit. It is everything that you’re going to need to get things done. It includes the damp proof creams for injecting, a mastic gun to inject the cream, and a drill bit to drill the correct size holes.

This is the best damp course injection if you’re a beginner and need something tried and tested. You get all the kit you need. With the help from the tutorial provided this kit can help you get through the entire process simply.

Even if you already own a mastic gun and drill bits, then this kit is still a great option. You could just buy the cream on its own and save a few quid, but spare mastic guns and drill bits are always handy to have. The cream itself works great, and the full kit gives you everything you need.


  • DPC cream works great.
  • Comes with everything that you need.
  • Even includes drill bit.


  • More expensive than most.
  • You might be paying for things you don’t need (drill bit, mastic gun).

You can learn more about Dryzone’s Damp Proofing Kit and read customer reviews on Amazon by clicking here

Dryzone DPC Cream (cream only)

dryzon injectable dpc

If you only want cream and are not interested in the full kit, this might be a better option.
When you’re looking for the best damp course injection, it is hard to avoid Dryzone. They’re the leading brand for injectable damp proof courses. Their formula is tried and tested and comes with about every approval and certification that you would want.

The research study that was mentioned earlier actually used Dryzone as the control case. This meant they tested the rest of the market against their standard. Essentially, you’re getting a quality product and you know that it works.

The downside to buying from the leading brand is the price. This stuff works, but it costs quite a bit more than others. The pack of five is only a little bit cheaper than buying the full kit. Pricing like this is always irritating since it invites you to stock up drill bits and applicators that you might not need. 

That’s the trade-off with Dryzone. You’re paying more but you can be certain you’re getting cream that works. These individual cartridges might not be much cheaper than a full kit. Although, if you already have drill bits and an injector gun then the saving is still worthwhile. If you’re weighing up the price, keep in mind that properly done DPC injections should provide 30 years of cover.


  • Most reviews report that it works great.
  • 80% of the cream is the active ingredient.
  • Performs well even in very saturated walls.


  • The price.

You can learn more about Dryzone’s DPC Creams and read customer reviews on Amazon by clicking here

Rempro Damp Injection Cream Kit and Installation Guide

rempro dpc cream kit

After Dryzone, Rempro is the second biggest DIY brand for damp course injection creams. Like the other kit, this one comes with everything that you’re going to need. It even includes a small leaflet explaining how to apply the cream. This is a nice touch, and makes the process of injecting your walls straightforward.

The Rempro kit also comes with some additional extras. Along with the instruction guide, drill bits and mastic gun, you also get a pair of heavy-duty gloves to use while installing. These extras don’t drive the price up either, with the whole package clocking in quite a bit cheaper than the Dryzone version.

The cream itself is pretty effective. It is BBA tested and certified, so you can feel assured that this is going to get the job done. If you’re looking for the best damp course injection that comes as a kit, then this is a solid choice for saving a bit of money.


  • Cheaper than Dryzone.
  • BBA certified.
  • Comes with everything you’ll need.


  • Extras may be unnecessary.

You can learn more about Rempro’s DPC Kit and read customer reviews on Amazon by clicking here

Rempro DPC Injection Cream

rempro dpc cream

This is the stand-alone Rempro DPC injection cream. As with the Dryzone, these are the cartridges you’ll need if you already have a mastic gun and drill bits. It can also work if you have a large surface area to work with. Using the same brand as an add-on for more coverage is a safer bet than using something new once the included cartridges run out.

This stuff gets positive reviews and you can be sure that it is going to work when applied correctly. Like other stand-alone products, the downside is that this isn’t much cheaper than purchasing the full kit.

The Rempro cartridges are 400ml, which means they need a larger applicator gun than the standard 330ml. This is the model that is included in the full kit. However, if you’re getting this rather than the kit, because you already have a mastic gun, then you’ll need to make sure it’s compatible.


  • Creates a very effective barrier to rising damp.
  • Good price.
  • Larger size.


  • Not much cheaper than a full kit.
  • Larger size can make it incompatible with some mastic guns.

You can learn more about Rempro’s DPC Cream and read customer reviews on Amazon by clicking here

DryFix DPC Damp Proofing Injection Cream

This DryFix DPC cream is the last brand we’ll cover for the best damp course injections. Like the others, this is BBA certified and you can rely on it to do a good job, working its way into your mortar and creating a damp barrier.

There isn’t much difference between the chemicals used for this injection cream and those used by the other two brands. They all have the right certification and use a decent amount of active chemical to give you proper weatherproofing. This is important if you want to avoid those inactive chemical mixes that research has found to be ineffective.

Reviews are generally happy with the performance of DryFix. They come in 380ml sizes, which should give decent coverage. The manufacturer suggests that one tube treats around 1.9 meters of a 9-inch-thick brick wall. Your results might not be as good for coverage though. Some reviews do mention that it flows very fast so can be hard to control. This can result in wastage


  • Cream works great to seal walls.
  • 20-year performance guarantee.
  • Larger tubes than many other brands.


  • Some reviews report it flowing a bit fast.

You can learn more about Rempro’s DPC Cream and read customer reviews on Amazon by clicking here

Buying Guide

Those are our picks for the best damp course injections available at the moment. However, choosing which is right for you is a bit more complicated than just looking at the price. You need to think about how big your damp problem is, whether you require a full kit, and generally make sure that it is going to meet your needs. This guide covers everything else you need to know to make the right decision. This is how damp proof injections work, what you need to think about when picking one, and what else you’ll need.

How Does Damp Proof Injection Work?

A damp proof course injection works quite simply. You inject chemicals into your brickwork. Here, the bricks soak up the waterproofing liquid. This becomes a protection layer. This layer of waterproofing will prevent moisture and damp from rising up. You can read more about the process here.

What Does Damp Proof Injection Fix?

Damp course injection is used to treat rising damp. It forms a waterproof layer in your brick mortar, which will prevent the water from rising upwards and turning into damp. Damp proof coursing is a great DIY alternative to adding a standard DPC. It is often used in conjunction with other measures like fixing a damp proof membrane to a wall. The best damp proof courses can work well and keep your brickwork waterproofed for up to 30 years.

How to Choose a DIY Damp Course Injection

All of the products listed here are solid choices for a damp proof course injection. Each uses an active chemical which is going to get the job done. Which one you choose is going to depend on your specific needs. This is what you need to think about to choose:

  • Kit or cartridge? – A full kit will usually come with a mastic gun and drill bits. If you already have access to these things or you’re happy to source them yourself then just buying cartridges can work fine. However, with such a small difference in price going for the kit is usually a better deal.
  • How much coverage? – If you’re covering a large amount of space, then you’re going to need quite a few of these course injectors. Price out the project by looking at how many cartridges you’re going to need, allowing for some mistakes or misfires along the way.
  • Price – The price can be an important factor when making your choice. Keep in mind though that the bottom of the price scale for these isn’t going to be of a high-quality.

    All the products listed in this article are high quality. You won’t go far wrong with any of them. However, there are plenty of products out there with very low prices. Many of these have low silicone content and use ineffective fillers. Unfortunately, these won’t actually waterproof your wall. Remember, this is an investment in damp proofing your home that can last up to 30 years, so spending a little more now will pay off in the long-term.


These are our top picks for damp proof creams. In our opinion they are the best damp course injection creams on the market. Each will waterproof your wall without too much fuss and can be easily applied as a DIY project. The best thing about damp proof creams is the ease of use and low cost. Replacing an original DPC is no small task. It would require a professional to carry out major structural alterations to your property. This would include removing sections of brickwork and reapplying a plastic membrane. Due to the high cost of labour, DPC creams can be as much as 10X cheaper and just as effective