Consisting of a one component polymer / latex modified Portland cement mortar for the installation of impervious porcelain, large format tile, glass mosaics, ceramic tile, marble, granite, and all natural and dimensional stone tile. For absorptive, semi-vitreous tiles and vitreous tiles in service of industrial, commercial and residential use on walls and floors. It provides a permanent installation with a high bond and compressive strength and requires no soaking of the tiles. DYNA® - MULTIFLEX 620 | Polymer-Modified Thin-Set Mortar (Universal Grade / Multi-Purpose) is resistant to water after being cured but does not provide a waterproof barrier.
It is freeze / thaw and radiant heat resistant. It provides high sag resistance for ease of installation of large format tiles.


- For interior and exterior setting of non-vitreous, semi-vitreous and vitreous floor and wall ceramic tiles, porcelain stoneware tile, marble, granite, quarry tile, pavers, slate and natural and dimensional stone tiles and slabs.
- Tiles can be set over concrete masonry, Portland cement mortar beds, glass mesh mortar units, gypsum board, unglazed ceramic tile, marble, clay tile, prepared existing cementilious terrazzo floors and cementilious backer units.
- It can be used for residential, commercial and industrial installations.
- It may also be used for the installation for indoor residential and light to moderate commercial floors and countertops in dry areas only over CSA-0221 EXTERIOR SELECT or (SEL TF) Douglas Fir plywood according to COFI classification, vinyl asbestos tile and dry-cut back adhesive.


- Easy to Handle: Plastic, workable, glides on, non-sagging, non-slipping, long open time and increased tile adjustability.
- High Bond Strength: Greater than 500% stronger than mastic type adhesives.
- Versatile: One material can be used for floor and wall applications. Bonds to cementitious and plywood substrates. Interior And Exterior applications. Can be used on numerous substrates. Good porcelain stoneware tiles installations.
- Premium Performance: Is radiant heat resistant. Increased freeze / thaw resistance over conventional thin-set mortars. High bond strength. High impact and flexural strength. High water resistance and less water permeable than conventional thin-set mortars.



1. Stone such as Rosso Levanto, Negro Marquina or any green marble can be set with this material, but due to the characteristics of these types of stone, warpage may occur due to the water in the thin-set mortar. It is therefore, recommended that DYNAPOXY 6100 be used for the setting of these types of stone.
2. For the installation of white or translucent marble, a white setting mortar should be used.
Do not use a grey mortar mix as this may discolor or stain the stone.
3. Do not use over presswood or particleboard, masonite, chipboard, laun, asbestos board, gypsum floor patching compounds, metal, glass, plastic, or any other unstable materials which are deemed unsuitable substrates.
4. Do not use in temperatures below 10°C (50°F) or above 40°C (104°F).

SECTIONS     -    930000



1. All substrates must be to the recommended tolerances of ANSI A108.5 for dry-set mortar installations. The substrates must be structurally sound, stable, dry, clean, and free of grease, oil, paint, dust, tar, wax, curing agent, primer, sealer, or, any other substances, which may prevent or reduce the adhesion of this product. Painted surfaces must be completely sanded, scraped, or chipped to promote adhesion. Surfaces may be cleaned with a DYNA brand of cleaner if thoroughly flushed, rinsed and neutralized.
2. For exterior grade plywood substrates the wood sub flooring must be structurally sound and securely fastened with a screw type or ring shank nails and adhesive. Plywood flooring should be free from dust, dirt, oil, or grease. There must be 2 layers of 16mm (5/8”) exterior grade plywood on bridged floor joists exceeding 400mm (16”) maximum spacing on center with a maximum deflection of 1/360 of the span. Joints on the top layer should be offset from the joints on the bottom layer of the plywood. A gap of 3mm (1/8”) is required between overlay sheets and all materials they abut such as walls adjacent sheets, posts, etc. shall have a gap of a 6 mm (1/4”). The adjacent edges of plywood sheets shall not be more than 0.8 mm (1/32”) above or below each other
3. Detailed installation procedures may be found in the TCA handbook and hall conform to ANSI 108.5.


1. Use a clean mixing vessel and pour approximately 5.0 to 5.5 litres of cold clean water then add 22.7 kgs (50 lbs) of MULTIFLEX 620 gradually while mixing.
2. Use a slow speed mixer (approximately 150 R.P.M.) Mix thoroughly to a homogeneous and smooth consistency. Avoid air entrapment by prolonged mixing, which if occurs will lower compressive strength of the mortar.
3. Permit the mix to slake for 10 to 15 minutes.
4. Re-stir the entire contents of the vessel without adding anymore water to the mix.
5. Wash you mixing tools immediately with water after use.
6. Some stiffening of the mix may occur before all the material is consumed.
When this occurs, simply restir by hand or machine, but DO NOT add any more water.


1. Use of a recommended notched trowel with adequate depth to achieve a 100% mortar contact, after beat-in, to the back of the tiles is recommended. Using the flat edge of the trowel, spread a thin coat over the substrate.
2. Then apply additional material and comb the mortar with the notched side of the trowel. Do not spread more mix than can be covered with the tiles within 10 to 15 minutes, otherwise a skin may form on top of the mortar and proper adhesion will not be achieved.
3. Place the tiles firmly into position with a slight twisting motion. Then once the tile has been set, properly beat the tile with a beating block in order that at least 6.4mm (1/4”) of the thickness of the tile is set into the mortar bed. Finished mortar bed thickness should be between 2.5 to 3mm (3/32” to 1/8”) thick after the tiles are beat in without any voids or air pockets.
4. Insure that your alignments and adjustments are performed immediately (do not exceed 30 to 40 minutes).
5. Should skinning occur, remove the dry or skinned mortar and replace it with fresh mortar. Clean out the joints and smudges from the face of the tile immediately with a damp towel. Leave at least 2/3 of the joint depth open for grouting. Do not soak the tiles before application.
6. For commercial floors, shower applications and exterior application or when installing marble, granite, or porcelain tiles, back butter each tile immediately prior to laying it into position using the flat edge of the trowel to ensure and achieve a 100% mortar contact.

NOTE: Follow T.C.A. handbook method EJ 171 for detailed specifications. Detailed instructions on the use of this product can be obtained in the Product Data Sheet to this product.


Provide expansion and control joints where specified. Do not cover any expansion joints with mortar. Cut tiles on both sides along the edges of the expansion joints. Also insert the specified compressible bead and sealant to caulk the expansion and control joint.
Follow ANSI AN 3.8, “Requirements for Expansion Joints”.


Do not walk over, grout or disturb the tiles for at least 48 hours after the installation. Use DYNACOLOR 1000, DYNACOLOR 2000, or DYNAPOXY 6100 grouts when grouting.


- Protect tile-work from freezing and complete water immersion for at least 28 days after the completion of the work performed.
- Do not walk on the tiles for at least 48 hours after the installation.
- Plywood stepping boards may be used after 24 hours when it is unavoidable to occasionally step on the floor. Do not permit heavy traffic to pass on the tiles for at least 7 days after the installation.
- Protect walls from impact, heavy hammering and vibration on opposite and adjacent walls for at least 14 days after installation.
- When working in cold temperatures or high humidity protect the tile-work for an extended period of time to permit the mortar to adequately cure before you grout or permit traffic to walk on the tiles.


22.7 kg (50 lbs) Bag: 7 m² - 8 m² (75 ft² to 86 ft²).


Wash your tools immediately after mixing. Clean your hands and tools with water while the mortar is wet.


DYNA® - MULTIFLEX 620 | Polymer-Modified Thin-Set Mortar (Universal Grade / Multi-Purpose) is available in 22.7 kg (50 lb.) Bag.


CAUTION. Consult and read the SDS thoroughly for this product for more safety information. This product is corrosive as it contains Portland cement. Portland cement when mixed with water results in a solution of calcium hydroxide and is therefore injurious to the eyes and can cause skin irritation. Therefore, avoid eye contact and prolonged contact with the skin. Protect eyes with goggles and skin with waterproof gloves. If splashed in eyes, flush thoroughly for at least 15 minutes and consult a physician immediately.
In case of ingestion, drink milk or water (avoid fruit juices)
and consult a physician immediately.


DYNA shall not be liable for incidental and consequential damages, indirectly or directly sustained, nor for any loss by application of these goods not in accordance with the printed instructions or for other than the intended use. Before using the user shall determine the suitability of the product for its intended use and the user will assume all risks and liabilities that may arise in connection therewith. DYNA’s liability is expressly limited to the replacement of defective goods. Any claim shall be deemed waived unless the claim is made in writing to DYNA within 30 days
from the date it was, or reasonably should have been,
discovered that the product was defective.


This premium quality product was designed to satisfy the user. If you are not satisfied after Surface Testing on a small area, please contact our technical service department immediately.
NO WARRANTIES expressed or implied are offered by DYNA. The Manufacturer’s liability is limited to the replacement of products proven defective.
The user assumes all risks and liabilities associated with the use of this product.


Product Code Size And Color
22.7 kg (50 lbs.) Grey
22.7 kg (50 lbs.) Ultra White