Patio Grout - with GftK Technology
Patio Grout 1-part paving joint grouting product on the market, designed for Professionals & competent DIY’ers
It is easier and faster to apply, because it allows the most efficient and effective use of wet slurry application, which provides optimum self-compaction into the joints, with no additional tooling or finishing required.
In comparison with other air-drying, 1-part, paving joint compounds, because of its higher strengths and higher performance.
Patio Grout is designed for Professional and DIY use on domestic paving with pedestrian traffic, i.e., for garden patios, pathways, and terraces etc. It is used for grouting most types of external natural stone and concrete paving, including smaller format e.g. setts, cobbles, brick pavers etc., as well as for larger format slabs, and flags.
Patio Grout is suitable for use on both new paving & paving repointing projects.
Key Characteristics / Advantages
- Can be applied in light rain
- Supplied ready to use
- No mixing required
- Fast wet-slurry application
- Self-compacting
- No tooling required
- Non-staining
- No oily residues
- Higher strengths & performance
Technical Performance
Technically, Patio Grout is the ‘State-of-the-Art’ air- drying, paving joint compound, formulated using a unique, blended polymer, with graded fine aggregates based on alluvial sands. Patio Grout s a 1-Component mortar that is supplied vacuum packed, ready-to-use, with no mixing required on site. The product’s unique level of moisture tolerance allows the most efficient and effective use of wet slurry application, giving optimum self-compaction into the joints. No additional tooling, compaction or finishing of the joints is required. As a result, the grouting works are easier to undertake and they can be completed and finished faster, even in wet weather, plus there is also far less cleaning work to do afterwards. The higher strengths and higher performance, significantly increases durability and service life.
Technical values:
| Density | Flexural Strength | Compressive Strength | Permeability |
|---|---|---|---|
| 1,7 kg/l | ca. 9,0 N/mm² | ca. 18,0 N/mm² | At a 20% joint ratio, approx. 12 l/m²/min. |
Paving Joint Dimensions:
| Joint width | Continuous minimum 3 mm, continuous maximum 20 mm. |
|---|---|
| Joint depth | 30mm for optimum performance, min. 25mm when full depth of paving elements is 25mm. For continuous joint widths greater than 15mm, use twice the width for the depth. |
Easier – Faster - Better
Patio Grout is the ‘State-of-the-Art’ in 1-component paving jointing, which is because all these greatly improved application characteristics directly impact, and significantly increase the performance values. Specifically this means that Patio Grout achieves compressive and flexural strengths more than 100% higher, with lower e-modulus, and much better strength correlation than other 1-part air-drying, paving joint materials. This also increases internal cohesive strengths in the joint, and most importantly, optimises adhesive bond to the joint sides – All of which are ‘Key factors’ for achieving durability and a longer service-life. This is because of the increased ability to accomodate and dissipate thermal movement and reduce stress on the bond line, where the adhesive bond is also much higher. The combination of all these superior values gives Patio Grout significant advantages in performance and durability.
Patio Grout is completely cement-free, making it kinder to the environment, with no risk of cement run off damage to drainage, plus there is no risk of cement staining to the paving or any adjacent surfaces.
Tip: : If the pails have been stood or exposed on site for a long time prior to use, then we recommend pouring the material back into the pail when the vacuum sealed bag is cut open. This helps to reduce any consolidation and ensure the material is fully homogeneous and consistent for use, plus some people can find it easier to pour the material out from the pail rather than the bag, into piles on the paving.
Colour Note: Please be aware that the graded fine sands used in Patio Grout are an abundant naturally occurring raw material, which means their base colour can vary. Whilst we endeavour to maintain colour consistency, it is best wherever possible to use pails from the same batch to complete a project. Also, when extending a previous project, be aware that such variances are likely, as well as variations due to the exposure and weathering. The colours depicted on the packaging and on the website are therefore indicative and representative only.
Patio Grout Consumption
The figures given in the Patio Grout Consumption Table below are calculated for a joint depth of 10mm and must be multiplied by the actual depth of the joint for your project i.e. for 20mm joint depth, multiply by x2, for 30mm joint depth by x3.
Patio Grout – Consumption Table (consumption per 10mm depth of joint)
Type of Paving Units |
Paving Size (mm) | Approx. kg/m² (at 10mm depth) for Joint Widths of: |
||||
|---|---|---|---|---|---|---|
| Width | Length | 3 mm | 5 mm | 10 mm | 15 mm | |
| Smaller format paving (e.g. stone setts / cobbles |
60 | 80 | 1,4 | 2,3 | 4,3 | 6,1 |
| 80 | 100 | 1,1 | 1,8 | 3,4 | 4,9 | |
| 100 | 100 | 1,0 | 1,6 | 3,1 | 4,4 | |
| 100 | 120 | 0,9 | 1,5 | 2,9 | 4,1 | |
| 100 | 200 | 0,7 | 1,2 | 2,4 | 3,4 | |
| 120 | 160 | 0,7 | 1,2 | 2,3 | 3,3 | |
| 140 | 160 | 0,7 | 1,1 | 2,1 | 3,1 | |
| 180 | 180 | 0,6 | 0,9 | 1,8 | 2,6 | |
| Larger format paving slabs / flags |
300 | 300 | 0,3 | 0,6 | 1,1 | 1,6 |
| 400 | 400 | 0,3 | 0,4 | 0,8 | 1,2 | |
| 600 | 400 | 0,2 | 0,4 | 0,7 | 1,0 | |
This consumption table refers to areas of both smaller format paving (generally regarded as <300 x 300mm), and larger format paving (typically >400 x 400mm). The uneven shapes and profiles of natural stone setts / cobbles with cropped or riven edges, as well as different paving designs or laying techniques, can also lead to variations in consumption.
Loss and wastage: There are no allowances for loss or wastage included in this table, and an appropriate amount should be added. Professionals usually add around +10%, for loss and wastage according to the site situation.
There is also a Patio Grout Consumption Calculator above on this page (see it). This is designed as a tool for estimating Patio Grout consumption on your projects.
Packaging & Storage
Packaging: 15kg oblong pails with the mortar in a vacuum sealed plastic bag inside the pails.
Storage: Up to 18 months, if stored in dry and frost-free conditions, and in the original and unopened packaging.
Note: : Technically, if any unused material is poured into the pail, covered with at least 50mm of clean water and sealed, then it can be good to use for a few weeks at least. However, as this is all beyond our control, we always recommend that opened bags are used within the specified wet slurry working time of around 45 minutes..