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  • 205 Flexible Joint Filler

205 Flexible Joint Filler


205 Flexible Joint Filler, a coloured two pack, pourable, flexibilised epoxy filler/sealant. The consistency of the mixed sealant allows direct pouring of the sealant into horizontal joints.

Seals floor joints in food factories and warehouses where heavy vehicular trafficking occurs.

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  • 250 char. max
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£38.40(ex. VAT)
£46.08 (inc. VAT)
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Available for Delivery (See Delivery Options Below)


205 Flexible Joint Filler is a coloured, two pack, pourable, flexibilised epoxy filler/sealant. The consistency of the mixed sealant allows direct pouring of the sealant into horizontal joints.

Hard and tough enough to protect joint edges from heavy wheel loading, 205 Flexible Joint Filler possesses sufficient flexibility to accommodate a degree of movement (10% of the joint width), and is particularly suitable for filling saw cut joints in long strip floor construction.

This product is for Professional Use Only.

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Features & Benefits

  • To seal floor joints in food factories and warehouses where heavy vehicular trafficking occurs
  • No primer required
  • Excellent adhesion to concrete
  • Tough and resilient
  • Suitable for wide joints
  • Highly resistant to water
  • Easy to apply
  • Fast curing
  • Hygienic and easily cleanable
  • Low viscosity

Typical Properties

Typical Properties
Pot Life: 1hr @ 20°C
Specific Gravity: 1.32
Shore A hardness: 75
Movement accommodation factor: 10%
Chemical Resistance: Very good resistance to dilute mineral acids, alkalis, petrol, oils, milk, citric acid, hydraulic fluid, and hot water. Please refer to our technical department on 0113 2455450 (option 2) or send a message to [email protected] for specific advice.

Joint Design

When using 205 Flexible Joint Filler, the joints shall be designed to ensure that concrete movement due to shrinkage and temperature fluctuations does not exceed 10% of the joint width.

  • For joints up to 12mm wide, the depth of sealant should be equal to the width.
  • For joints over 12mm wide the depth of sealant should not exceed 20mm.
  • Joints over 25mm wide are permissible

Surface Preparation

New concrete floors shall be a minimum of 21 days old. Joint surfaces shall be sound, clean and free from laitance, dust and other contaminants.

Joint edges are best prepared by grinding or power wire- brushing; ensuring that all spoil and residual dust is removed by blowing with dry, oil free, compressed air.

De-bonding tape should be used in the base of the joints otherwise a polyethylene foam backing strip should be inserted to the appropriate depth.


Pour the contents of the CURING AGENT container into the BASE container and thoroughly mix, preferably by mechanical means until a uniform consistency is achieved.

Mixing Ratio

  • By Weight = 100 Base : 42.1 Curing Agent


The mixed material may be poured directly into the prepared joints to level.

Alternatively, 205 FLEXIBLE JOINT FILLER may be poured into empty cartridge tubes and gunned into the joints using a sealant gun. It may be necessary to top up to level after a few minutes when the sealant has settled into irregularities.

Equipment Cleaning

Clean equipment with 109 TOOL CLEANER prior to curing of the sealant.


Will have cured sufficiently following 24 hours cure @ 20°C to allow trafficking.

Full chemical resistance will be achieved following 7 days cure @ 20°C.

At lower temperatures cure times will be increased.


  • Do not apply to wet or uncured concrete surfaces.
  • Do not apply at temperatures of 3°C or less.

Product Details

Data sheet

For Use By
Professional Use
Interior / Exterior Use
Interior Use
Single, Two or Three Pack
10 Linear Metres (of a 10mm x 10mm joint) per litre
Touch Dry
24 Hours
Standard Colours
Suitable For Use On
Suitable For Use On
Application Method
Sealant Gun
Application Method
Product Type
Product Category
Colour Family
Colour Family
Colour Family
Colour Family
Colour Family
Colour Family
Colour Family

Customer agrees that before placing an Order, Customer has read and understood the most up to date Product Data Sheet for the Product. Where we have access to the Product Data Sheet from the manufacturer, we will either provide a copy on request, or include a link to the Product Data Sheet available on the manufacturer’s website. Customer further agrees that we have no liability for any errors or omissions contained within the Product Data Sheets. For more information, please see our Terms & Conditions of Sale.

questions Iain on 2021-11-06 09:54:47

Can I use this outdoors on a front step of a house? There is a movement crack which needs repaired. It’s concrete. Thanks.

Answer from Rawlins’ Technical Team: 

This can be used externally assuming the cause of the movement has been addressed.

If the movement continues and exceeds the capabilities of the material the crack will reappear.

205 Flexible Joint Filler is flexible but not elastomeric.

questions David Baker on 2019-11-16 15:41:03

I have built a concrete path with prepared expansion joints These are 10mm wide and 20 mm deep Would the 205 be a suitable material

Answer from Rawlins’ Technical Team: 

Generally we would suggest something like Sikaflex PRO-3 for this type of application. We would suggest that a backer rod is used to bring the joint up to 10 x 10mm.

To confirm the suitability we would need a full detail of the application.

questions Abs on 2019-03-22 10:18:34

Can this be used on chips and cracks in fiberglass gelcoat and can this be painted over?

Answer from Rawlins’ Technical Team: 

No this would not be a suitable application for this product.

questions J Taylor on 2018-03-13 14:30:56

I have cracks in concrete patio presumably where joints were put it. I need a filler that is waterproof and durable?

Answer from Rawlins’ Technical Team: 

We would recommend Rust-Oleum Epoxyshield Fine Crack Repair for this.

questions John miller on 2016-09-03 14:26:15
Question: I have a crack in the garage floor about 6mil at the most, apart from one bit which is about 15 mil x10 mil. The crack is across the floor 14 feet some of the crack is very fine about 1 mil. Would the joint filler 205, be any good ? Thanks.
Answer from Rawlins’ Technical Team: 

No, you would be better using our 204 Fine Crack Repair.


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205 Flexible Joint Filler is only available with the shipping and delivery timescales listed below - please do not contact our Customer Support Team with enquiries about alternative or earlier shipping and delivery times.

Saturdays and Sundays, as well as Bank Holidays, are not classed as working days.

Orders placed after the cut-off for this product will not be processed for earliest dispatch until 9am the next working day.

All delivery costs below are excluding VAT

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