Bostik Flowfill Grout GP – 20kg

SKU: W47542
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$21.89 (inc.GST)

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Bostik Flowfill Grout GP is a Class A, flowable repair grout with controlled expansion designed for use with concrete. Expansion in the plastic state helps compensate for shrinkage and settlement. Contains Portland cement, graded aggregate and specialised additives.

Suitable for:

  • General purpose grouting
  • Precast and pre stressed panels
  • Grouting in column bases, base filling
  • Filling core holes, rod holes and similar concrete defects
  • Fill in grout for hollow block walls
  • Joints between precast panels and other joints
  • Tilt slab panels


  • A general purpose non-shrink (Class A) cementitious grout ideal for most void filling grouting jobs
  • Pre-hardening volume-adjusting. Controlled gaseous expansion system compensates for shrinkage and settlement before hardening occurs.
  • Ready to use, pre mixed, requires only the addition of water
  • Can be pumped, trowelled, rammed or flowed to areas where normal grouting methods do not suffice.
  • Can be mixed for stiff, plastic, flowable or fluid application
  • No metallic iron content to cause staining
  • Lower water/cement ratio reduces drying shrinkage, increases durability and reduces permeability

Options for concrete, grout and bagged products are available.

  • Colour: Grey powder
  • Fresh Wet Density: Approx 2100 Kg/m3
  • Application thickness: 20mm – 120mm
  • Application temperature: 5 - 30⁰C
  • Placement Time: Within 25mins of mixing
  • Time for Expansion
  • Start: 15mins
  • Finish: 2-3hrs
  • Weight: 20kg


Bostik – Flowfill Grout GP – Data Sheet

Estimated shipping times on our range of stocked items are as follows:

Location Expected Delivery  

NSW Metro

1-2 business days

Usually overnight. Same day delivery can be arranged for an extra charge.

NSW Regional

2-3 business days


VIC Metro

1-2 business days

Usually overnight.

VIC Regional

2-3 business days


QLD Metro

1-2 business days

Usually overnight.

QLD Regional

2-3 business days



1-2 business days

Usually overnight.

SA Metro

1-2 business days

Usually overnight.

SA Regional

2-4 business days


NT Metro

4-6 business days


NT Regional

5-7 business days


WA Metro

4-5 business days


WA Regional

6-7 business days



3-4 business days



To ensure prompt and secure delivery, it is the buyer’s responsibility to ensure someone is available to accept delivery. Alternatively, please include "Authority to Leave" instructions on your order.

We pride ourselves on the fast reliable delivery of our items.

Free delivery for orders over $499.00 is provided on all orders to Australian Capital Cities and major regional areas. Unfortunately, due to the size and weight of our products, it is not possible to provide free freight to remote regional areas or products which are excessively heavy. These items are noted as such on our Website

Place your order before 1.00pm on a weekday and in stock items will be shipped the same day (excludes Public Holidays).

Is your order large and requiring a forklift?

It is the buyer’s responsibility to ensure a forklift is available to unload any large, bulky orders which will be packed on a pallet. If redelivery with a tailgate truck is needed, extra charges will apply (if you are not sure please contact us)

What happens if an item I ordered was out of stock?
If an item you have ordered is out of stock, your order will be placed on hold until the available item is obtained. This will be reflected on your confirmation email, as your dispatch date will be delayed

Delivery to Post Office Boxes
Unfortunately, due to the size and weight of our products, orders cannot be delivered to PO Boxes or by mail. All items are delivered by courier to ensure secure, reliable, prompt delivery


Why can I return a product?

  • The product does not match the description on Website or catalogue.
  • The product did not match the customer’s expectations.
  • The product is faulty or damaged.

What can be returned?
All products can be returned, as long as they are in original packaging and unused.

When do items need to be returned by?
Items may be returned within 30 days from the date of purchase.

Where do items need to be returned to?
37 Bentley Street, Wetherill Park, NSW 2164

Shipping for returns?

Are original shipping rates refundable? Does customer pay for shipping the return?
Customer must pay for return shipping.

Credit for returns?
100% credit will be provided, less shipping costs.

Free Delivery
Free Delivery

Free delivery on orders over $499

Click & Collect Available
Click & Collect Available

Most orders are ready within 30 minutes*

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100% Secure Checkout

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5% Price Beat*
5% Price Beat*

We will beat any written quote by 5%*