Nitoseal 290 constructive solutions

Flexible polyester loop and lighting sealant

Uses Typical examples of sealant width/depth ratios

(moving joints only)
For sealing horizontal cable slots in concrete and asphalt
pavements associated with: Groove width (mm) Sealant depth (mm)
6 - 10 10 minimum
 Road traffic signals and inductance loops 10 - 20 As width
20 plus 20 maximum
 Airport runway lighting In all cases the sealant should be finished flush with the
pavement surface.
 Automatic barriers or gates
Properties
Advantages The following results were obtained at a temperature of
 20°C unless otherwise specified.
 Excellent adhesion to concrete, asphalt and steel
Specific gravity: 1.8
 No primer required in dry or damp conditions Pot life: 20 mins at 35°C
45 mins at 20°C
 Good resistance to chemicals, de-icing salts and Initial cure: 30 mins at 35°C
hydrocarbons 60 mins at 20°C
Shore A hardness: 90 @ 7 days
2
 Slightly flexible to accommodate limited movement Compressive strength 17 N/mm @ 7 days
(BS 6319 Part 2):
2
Flexural strength 12 N/mm @ 7 days
 Fast cure at 20°C and above minimises traffic disruption
(BS 6319 Part 3):
Linear shrinkage 0.5%
 Can be applied at low temperatures, cures below freezing (ASTM C531.74):
Water absorption 0.15%
 Available in black for use on asphalt and grey for use on (ASTM C413):
concrete 9
Electrical properties DC >2.5x10 Ohms
insulation resistance
Description (2500 volts):
Dielectric strength step by step 12.5kV/mm
Nitoseal 290 two-component flexibilised polyester based (ASTM D149):
sealant cures to form a tough resilient seal with a limited Chemical Resistance to
degree of movement. The material is self levelling and can be Salt water, Saturated urea, Excellent
poured or gunned directly into horizontal slots. Nitoseal 290 Petrol, & Aviation fuel:
will adhere to both concrete and asphalt surfaces that have QUV Weatherometer 1000 Slight discolouration
been well prepared whether dry or damp. hours (ASTM G53.77):

Design criteria Instructions for use

In the case of sawn cable grooves with no movement the Joint preparation
cable should be totally sealed and encapsulated within the
Nitoseal 290 to the top of the groove. Concrete and asphalt

Where movement is anticipated in the sawn joint, cables After cutting the required groove, all laitance or slurry from
should be laid free at the base of the saw cut. An oversized the water lubricated saw blade must be completely blown
closed-cell foamed polyethylene cord should be located out whilst wet using oil-free compressed air. Flush grooves
above the cables acting as a bond breaker and gasket with with clean water prior to blowing if required. It is not
the upper joint then sealed using Nitoseal 290. necessary to completely dry the groove. Any slurry that
The same details should apply to movement joints around has been allowed to dry, or powdered dust from dry cutting
airfield lights using an oversized closed-cell foamed operations should be power wire brushed or abrasive
polyethylene cord as a bond breaker and gasket with the blasted from the groove, followed by blowing with oil free
upper joint then sealed using Nitoseal 290. compressed air. This also applies to concrete or asphalt
faces around lighting units that have been formed
previously using a water lubricated diamond coring tool.

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Nitoseal 290
Steel Technical support

If bare metal, the joint faces around lighting units or posts Fosroc offers a comprehensive range of high performance,
should be abrasive blasted to remove all traces of corrosion. high quality repair, maintenance and construction
If aluminium, alloy or coated metals are to be sealed, the products. In addition, Fosroc offers a technical support
surfaces should be degreased using Fosroc Solvent 102* package to specifiers, end-users and contractors, as well
and allowed to dry for 5 minutes before sealing. as on-site technical assistance in locations all over the
world.
The correct width/depth profile may be achieved by the
installation of a foam backing cord. Alternatively, sand may
Typical Joint Details
be used to encapsulate loop wire whilst acting as a bond
breaker for the joint sealant.

To obtain neat straight edged seals, masking tape should be

applied to both edges of the joint prior to sealing, the masking
tape should be removed immediately following the
completion of the works.

Mixing

The two components of Nitoseal 290 are supplied in the

correct proportions for mixing. Pour the entire contents of the
liquid resin into a suitable mixing vessel and then slowly add
the powder component whilst mixing with a slow speed drill
(300 to 500 rpm) fitted with a Fosroc Sealant Mixing Paddle
(MR2).

Thoroughly mix the components for not less than three

minutes ensuring a homogeneous consistent mix.

Application

Groove sealing

Following thorough mixing, pour the Nitoseal 290 directly into

the prepared groove using a spouted container, watering can
or other suitable means. It may be practical and convenient
to fill narrow grooves using a Fosroc ‘G’ gun fitted with a
plastic nozzle, which if necessary can be cut to size to suit
the joint width.

Cleaning

Uncured Nitoseal 290 can be cleaned using Fosroc Solvent

102. Cured Nitoseal 290 can only be removed by mechanical
means. Any spillages of Nitoseal 290 should be absorbed
immediately onto sand, sawdust or other suitable absorbent
materials. Disposal should be in accordance with local
regulations.

Limitations

 Applications should not commence if the temperature of

the substrate is below 5°C.

 Service temperature range of Nitoseal 290 is from - 30°C

up to + 80°C.

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Nitoseal 290
Estimating Flash points

Supply Nitoseal 290 28°C

Solvent 102 33°C
Nitoseal 290: 10 litre packs
Fosroc Solvent 102: 4 litre cans For further information, refer to the Product Material Safety
Data Sheet.
Guide to sealant quantities
Additional Information
Number of litres required =
Fosroc manufactures a wide range of complementary
Joint width (mm) x groove depth (mm) x groove length (m) products which include :
1000
 Waterproofing membranes & waterstops
Adjustment should be made where necessary for the
volume of the cable. A further amount should be allowed for  Joint sealants & filler boards
possible wastage.
 Cementitious & epoxy grouts
Storage
 Specialised flooring materials
Shelf life
Fosroc additionally offers a comprehensive package of
products specifically designed for the repair and
6 months if stored in the original unopened containers in a
refurbishment of damaged concrete. Fosroc’s ‘Systematic
cool dry place at ambient temperatures below 25°C. Do not
Approach’ to concrete repair features the following:
store in direct sunlight.
 Hand-placed repair mortars
Precautions
 Spray grade repair mortars
Health and safety
 Fluid micro-concretes
Some people are sensitive to resins, hardeners and
solvents. Wear suitable protective clothing, gloves and  Chemically resistant epoxy mortars
eye/face protection. Barrier creams such as Kerodex
Antisolvent or Rozalex Antipaint provide additional skin  Anti-carbonation/anti-chloride protective coatings
protection.
 Chemical and abrasion resistant coatings
Should accidental skin contact occur, remove immediately
with a resin removing cream such as Kerocleanse Standard For further information on any of the above, please consult
Grade Skin Cleanser or Rozaklens Industrial Skin Cleanser, your local Fosroc office - as below.
followed by washing with soap and water. Do not use
solvent.

In case of contact with eyes, rinse immediately with plenty

of clean water and seek medical advice. If swallowed, seek
medical attention immediately - do not induce vomiting.

Fire

Nitoseal 290 and Fosroc Solvent 102 are flammable. Keep

away from sources of ignition. No smoking. In the event of
fire extinguish with CO2 or foam. Do not use a water jet.

Important note:
Fosroc products are guaranteed against defective materials and manufacture and are sold subject to its standard Conditions
for the Supply of Goods and Services, copies of which may be obtained on request. Whilst Fosroc endeavours to ensure that
any advice, recommendation, specification of information it may give is accurate and correct, it cannot, because it has no direct
or continuous control over where or how its products are applied, accept any liability either directly or indirectly arising from the
use of its products, whether or not in accordance with any advice, specification, recommendation of information given by it.

Fosam Company Limited

Telephone: +966 2 637 5345 Fax: +966 2 637 5891 email: fosam@fosroc.com
Head Office
Post Box 11081 Regional Offices
Jeddah Sales Office Tel: (02) 608 0999 Fax: (02) 638 0693 Yanbu Tel: (04) 322 4280 Fax: (04) 391 2980
Jeddah – 21453
Jeddah Showroom Tel: (02) 665 0187 Fax: (02) 667 4844 Makkah Tel: (02) 542 0869 Fax: (02) 542 0869
Saudi Arabia Riyadh Tel: (01) 482 9303 Fax: (01) 482 7562 Medinah Tel: (04) 855 0091 Fax: (04) 855 0047
Dammam Tel: (03) 814 1282 Fax: (03) 814 1581 Jubail Tel: (03) 362 3904 Fax: (03) 362 3875

www.fosroc.com Khamis Mushayt Tel: (07) 250 0469 Fax: (07) 250 0469 CSD Tel: (02) 608 0999 Fax: (02) 638 0693

Registered Office: Industrial Area, Phase 4, Road No. 414, Street No. 407
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